9 best charger for agm batteries
Chargers for AGM (Absorbent Glass Mat) batteries are essential tools for maintaining and recharging these types of batteries, commonly used in automotive and deep-cycle applications. AGM batteries are known for their sealed design, low maintenance requirements, and high reliability, and they are commonly found in cars, boats, RVs, and backup power systems. Here is some information about AGM battery chargers:
Compatibility: AGM battery chargers are specifically designed to charge AGM batteries. They provide the correct voltage and current levels needed for these batteries to charge efficiently and safely.
Voltage and Amperage: AGM batteries typically require a slightly higher charging voltage than standard flooded lead-acid batteries. AGM battery chargers are designed to provide this higher voltage while limiting the current to prevent overcharging.
Multi-Stage Charging: Many AGM battery chargers use a multi-stage charging process, including bulk charging, absorption charging, and float charging. This approach ensures that the battery is charged fully and maintained at an optimal level without overcharging.
Automatic Operation: AGM battery chargers are often equipped with microprocessors or smart charging technology, allowing them to monitor the battery's status and adjust the charging process accordingly. They can also detect when the battery is fully charged and switch to a maintenance mode.
Safety Features: Safety is a priority when charging AGM batteries. These chargers typically have built-in safety features such as short-circuit protection, reverse polarity protection, and temperature compensation to prevent damage to the battery or charger.
Portable Options: There are portable AGM battery chargers available that are suitable for jump-starting vehicles with a dead battery. These chargers often come with features like a built-in inverter for powering small appliances or tools.
Size and Capacity: AGM battery chargers come in various sizes and capacities to accommodate different battery sizes and applications. It's important to choose a charger that matches the capacity of your AGM battery.
Maintenance Mode: AGM battery chargers often have a maintenance or trickle charge mode, which is ideal for long-term storage. It keeps the battery topped up without overcharging it.
Desulfation: Some AGM battery chargers have desulfation features that help break down sulfate buildup on the battery plates, which can extend the battery's lifespan.
Quality Matters: When selecting an AGM battery charger, it's essential to choose a reputable brand and ensure that the charger meets the requirements of your specific AGM battery. Using an incompatible charger can damage the battery or pose safety risks.
In summary, AGM battery chargers are designed to cater to the unique charging requirements of AGM batteries, ensuring their longevity and optimal performance.They offer various features and safety mechanisms to provide efficient and safe charging. When choosing a charger, always refer to the manufacturer's recommendations for your specific AGM battery model to ensure compatibility and safety.
Below you can find our editor's choice of the best charger for agm batteries on the market
NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
Introducing the all-new GENIUS10, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS10 is a 6-volt and 12-volt battery charger, battery maintainer, trickle charger, and battery desulfator, rated at 10-amp for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as, marine and deep-cycle batteries.
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- GENIUS10 - Similar to our G7200, just better. It's 17% smaller and delivers 115% more power. It's the all in one solution battery charger, a battery maintainer, trickle charger, plus battery desulfator
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge
- Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more
NOCO GENIUS1, 1-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
Introducing the all-new GENIUS1, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS1 is a 6-volt and 12-volt battery charger, battery maintainer, trickle charger, and battery desulfator, rated at 1-amp for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as, marine and deep-cycle batteries.
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- Meet the GENIUS1 - Similar to our G750, just better. It's 35% smaller and delivers 35% more power. It's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator.
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
- Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.
NOCO Genius GEN5X2, 2-Bank, 10-Amp (5-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger, Battery Maintainer and Battery Desulfator with Temperature Compensation
Product description
Introducing the all-new GEN5X2, our most rugged, compact, and powerful, onboard marine battery charger we have ever made. The GEN5X2 is designed to charge and maintain up to two 12-volt lead-acid and lithium-ion batteries, including flooded, gel, AGM, and deep-cycle batteries. Each 12-volt battery bank provides up to 5-amps of pure charging power, plus doubles as a battery maintainer and battery desulfator. Included is a GEN5X2 10-Amp 2-Bank Waterproof Onboard Marine Battery Chargers (120-240VAC), Self-Tapping Mounting Screws, User Guide, 3-Year Warranty and certified to UL1236, ISO 8846, and 33 CFR 183.410.
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- Multiple banks - A two-bank onboard battery charger rated a 10-amps - 5-amps per bank - for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
- Charging modes - Independently charge and control each battery bank with selectable charging modes - including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode - for all types of lead-acid and lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Redefined mounting - A simplified mounting system allows for quick and easy installations in any direction - even up-side-down - with an integrated anti-vibration backing to isolate shock, vibration, and noise.
- Designed for water - A fully-sealed and waterproof onboard battery charger with an ingress protection rating of IP68, but has survived brutal life cycle testing, including thousands of hours underwater.
- What's in the box - GEN5X2 10-amp 2-bank waterproof onboard marine battery chargers (120-240VAC) with a 72-Inch (182cm) DC cables with 3/8-inch (M10) eyelets and a 72-inch (182cm) Type-B AC cable, self-tapping mounting screws, user guide, and 3-year warranty.
User questions & answers
| Question: | In rv i have a 12v battery for starting & another huge 12v, i assume for 12v rv appliances and lighting. can this be used to charge both at same time |
| Answer: | No, it is only compatible with 12V MAX* and 20V MAX* lithium ion slide pack batteries. |
| Question: | Does this battery stop charging automatically when the battery is fully charged |
| Answer: | good charger works great |
| Question: | Can this charger be used used to charge 2 batteries that are for 2 different machines |
| Answer: | I searched this and could not find a straight answer anywhere. I took a chance and bought this charger anyway. I have a LB2XR20 battery I bought from amazon and this charger worked perfect. Love it. |
| Question: | How many stages is this charger |
| Answer: | Yes, this will work. |
Optima 150-40000 Digital 400 12V Performance Maintainer and Battery Charger
Optima
Product description
The Optima Chargers Digital 400 12V Performance Maintainer and Battery Charger automatically maximizes battery life and performance with a built-in battery health mode. It also offers a hybrid LED battery charging gauge with LCD screen and a quick-set battery type selection for easy operation. And because it recovers discharged batteries that others cannot, this is the maintainer that is a must have in your garage.
- Automatically maximizes battery life and performance with a built-in battery health mode
- Hybrid LED battery charging gauge with LCD display
- Dual purpose hook and tilt stand design or hang it with the included wall organizer bracket
- Works well as a marine battery charger, motorcycle battery charger, or other AGM battery charger.
- Spark-free connection technology
User questions & answers
| Question: | This optima charger how long is the warranty, thanks |
| Answer: | The length of warranty on paper doesn’t matter because getting them to act on it is difficult. They wanted me to send the charger to them at my cost and wait without a charger for 6?weeks |
| Question: | Are the battery terminal clips/clamps plastic |
| Answer: | Yes, they are plastic. And Yes the break. My negative terminal just snapped in half... Not happy. Why couldn’t they just use metal?? |
| Question: | Does it work with Optima battery only or work with all brands |
| Answer: | It will work with any brand of battery. |
| Question: | Are the clamps made of plastic or are they built of some other material that will actually last |
| Answer: | The clamps are metal on the inside (obviously), and a durable plastic on the outside as insulating covers. Looks to be pretty durable, I've had no problems with them. But then, I tend to take care of my toys! :-) This unit, by the way, was an excellent investment...after having owned several less-capable chargers. This one restored my Yellow Top battery back to its full capacity in short order! I own a Tahoe Hybrid and had installed the Yellow Top as a result of standard batteries not holding a full charge after a year or two, and often draining when not running the Tahoe at least once every 4-5 days or so. Can connect full-time to the battery the accompanying cable, making the use of clamps unnecessary! Just have to remember to unplug it! |
Product features
DIGITAL 400
Looking for a car, marine, motorcycle, or other AGM battery charger? The OPTIMA Chargers Digital 400 12V Performance Maintainer and Battery Charger automatically maximizes battery life and performance with a built-in battery health mode. It also offers a hybrid LED battery-charging gauge with LCD screen and a quick-set battery type selection for easy operation. And because it recovers discharged batteries that others cannot, this is the maintainer that is a must-have in your garage.
OPTIMA Digital 400 Features
- Maximize battery life and performance with OPTIMA Batteries’ built-in battery health mode
- Hybrid LED battery-charging gauge with LCD display
- Hook it and tilt it with the dual-purpose stand design or hang it with included wall organizer bracket
- 4 amp max
Benefits of Optima Chargers
- Microprocessor-controlled charging. Intelligent and efficient technology charges batteries faster
- Advanced safety features including no spark, reverse polarity, diagnosis of several battery faults and failures to prevent overcharging
- Fully automatic, multi-stage performance charging, conditioning, maintaining and storage reconditioning mode
- Recovers deeply discharged batteries and extends battery life and maintains battery performance by inhibiting and breaking up sulfation in your battery
OPTIMA Digital 1200 Features
- Enhances the performance of OPTIMA and other AGM batteries
- Charges, conditions and maintains 12V AGM and flooded batteries
- Recovers deeply discharged batteries and extends battery life
- USB charging port
- 12 amp max
NOCO GENIUS5, 5-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
Introducing the all-new GENIUS5, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS5 is a 6-volt and 12-volt battery charger, battery maintainer, trickle charger, and battery desulfator, rated at 5-amp for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as, marine and deep-cycle batteries. 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- Meet the GENIUS5 - Similar to our G3500, just better. It's 34% smaller and delivers 65% more power. It's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator.
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
- Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.
NOCO Genius GEN5X3, 3-Bank, 15-Amp (5-Amp Per Bank) Fully-Automatic Smart Marine Charger, 12V Onboard Battery Charger, Battery Maintainer and Battery Desulfator with Temperature Compensation
Product description
Introducing the all-new GEN5X3, our most rugged, compact, and powerful, onboard marine battery charger we have ever made. The GEN5X3 is designed to charge and maintain up to three 12-volt lead-acid and lithium-ion batteries, including flooded, gel, AGM, and deep-cycle batteries. Each 12-volt battery bank provides up to 5-amps of pure charging power, plus doubles as a battery maintainer and battery desulfator. Included is a GEN5X3 15-Amp 3-Bank Waterproof Onboard Marine Battery Chargers (120-240VAC), Self-Tapping Mounting Screws, User Guide, 3-Year Warranty and certified to UL1236, ISO 8846, and 33 CFR 183.410.
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- Meet the all-new GEN5X3 - Similar to our GENM3, only better. It's 37% smaller and delivers 43% more power. It's one of the best performing onboard marine battery chargers we have ever made.
- Multiple banks - A three-bank onboard battery charger rated a 15-amps - 5-amps per bank - for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
- Charging modes - Independently charge and control each battery bank with selectable charging modes - including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode - for all types of lead-acid and lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Redefined mounting - A simplified mounting system allows for quick and easy installations in any direction - even up-side-down - with an integrated anti-vibration backing to isolate shock, vibration, and noise.
- Designed for water - A fully-sealed and waterproof onboard battery charger with an ingress protection rating of IP68, but has survived brutal life cycle testing, including thousands of hours underwater.
User questions & answers
| Question: | I have two batteries hooked up in series for my trolling motor! Do i have to disconnect the battery s before i plug it in or can i leave it in series |
| Answer: | The batteries do not need to be disconnected as long as each charging bank is connected to your batteries in 6-volt or 12-volt increments. |
| Question: | Can i simply splice in a length of same gauge wire to extend the length of the cables |
| Answer: | yes |
| Question: | My application is a 36v golf cart (3 x 12v) - I'm assuming that I could use this for a battery maintainer (one "channel" for ea 12v battery |
| Answer: | Yes. Channel 1 to battery 1, channel 2 to battery 2, channel 3 to battery 3. |
| Question: | is it ok to use just 2 banks to charge two battery's when you have a 3 bank charger ? a gen 5x3 3- bank, will it hurt the charger |
| Answer: | The bank you don't use will not turn on because the unit will not detect a battery. You should be OK. I recently had mine connected to 2 batteries with no issues. Just added a third battery and all is well. |
Schumacher SC1280 15 Amp 3 Amp 6V/12V Fully Automatic Smart Battery Charger Maintainer for Marine and Automotive Batteries
Product description
Charge and maintain your automotive and marine batteries with the Schumacher SC1280 6/12V Rapid Battery Charger and 15A Maintainer. Digital display for voltage and percentage of charge, Start/Stop interface, and LED indicators and push button controls make this unit easy to use. Features auto voltage detection to easily detect between 6 and 12V batteries. Automatically selects charge rate for charging and maintaining. Built-in reverse hook-up protection prevents charger from operating if clamps are reversed. Meets the highest industry standards with its Schu Eco Energy. DOE compliant. Compatible with standard, AGM, gel, and deep-cycle batteries. Rated for 800 CCA.
- Features 15A to charge and 3A to maintain your battery
- Auto voltage detection automatically detects 6 or 12V batteries
- Automatically selects charge rate for charging and maintaining
- Reverse hook-up protection ensures charger will not operate if clamps are reversed
- Charges compatible battery types, including standard, AGM, gel and deep-cycle batteries
User questions & answers
| Question: | What is the difference between the sc1280, sc1281, sc1323 and sc |
| Answer: | The length of warranty on paper doesn’t matter because getting them to act on it is difficult. They wanted me to send the charger to them at my cost and wait without a charger for 6?weeks |
| Question: | Can this be used to charge lawn tractor batteries |
| Answer: | Yes, they are plastic. And Yes the break. My negative terminal just snapped in half... Not happy. Why couldn’t they just use metal?? |
| Question: | What is the warranty on this product |
| Answer: | It will work with any brand of battery. |
| Question: | Want to charge battery in vehical (suv). is it safe to do in enclosed garage? thinking yes, but please confirm |
| Answer: | The clamps are metal on the inside (obviously), and a durable plastic on the outside as insulating covers. Looks to be pretty durable, I've had no problems with them. But then, I tend to take care of my toys! :-) This unit, by the way, was an excellent investment...after having owned several less-capable chargers. This one restored my Yellow Top battery back to its full capacity in short order! I own a Tahoe Hybrid and had installed the Yellow Top as a result of standard batteries not holding a full charge after a year or two, and often draining when not running the Tahoe at least once every 4-5 days or so. Can connect full-time to the battery the accompanying cable, making the use of clamps unnecessary! Just have to remember to unplug it! |
NOCO GENIUS2, 2-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
Introducing the all-new GENIUS2, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS2 is a 6-volt and 12-volt battery charger, battery maintainer, trickle charger, and battery desulfator, rated at 2-amp for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as, marine and deep-cycle batteries.
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- Meet the GENIUS2 - Similar to our G1100, just better. It's 34% smaller and delivers 65% more power. It's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator.
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
- Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.
6V/12V Smart Battery Charger Maintainer 2A 4A Fully Automatic 10-Stage Trickle Charger for Automotive Car Motorcycle Lawn Mower Marine Boat RV ATV AGM Lead Acid Battery, Deep Cycle Battery Charger
- 【10-Stage Smart Charging - Fully Automatic】12V battery charger with 10 stages automatic charging by intelligent MCU controller:[ Activation- Desulfation - SoftStart - Pulsecharge -BulkCharge - Absorbtion - Float- Flat - Analysis - Recondition]. Monitor the whole charging progress,stop automatically when the battery is fully charged.This motorcycle battery charger will recover batteries more effectively and extend battery life, perfect for year-round battery maintenance or long-term storage
- 【Widely Compatible Battery Charger】This smart battery charger can charge all types 6-volt and 12-volt lead-acid batteries, deep-cycle batteries, including flooded/gel/AGM and maintenance-free, lithium-ion batteries(12V LFP).The battery maintainer charger charge and maintain cars, motorcycles, lawnmowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, scooter, snowmobile, trucks (small), electric vehicle, electric tools,children toys, etc.( 4-120Ah).UPGRADED WITH 50A FUSE ONTO RING CONNECTORS
- 【Intuitive LCD Screen&Intelligent Detection】The 6/12 volt automotive battery charger maintainer provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode.LCD screen displays charging voltage/current/mode, battery type and power remaining. This car battery charger has Memory Function, it restores the last settings used, making your life easier. It also automatically detects sulfated batteries and attempts to repair them if possible
- 【Safety Guarantee】 - This trickle charger with multi protection against Reverse Polarity, Short Circuit, Over Voltage/Current, Overload, Overheat; with Constant Pulse Current Maintenance function to avoid overcharge and discharge; Spark proof during lead connection; IP65 Waterproof and dust resistant float battery charger, full-loaded and burn-in test proves its stable performance and high reliability
- 【All-in-One Solution】 - It's not only a 2A/4A battery charger, but also battery maintainer, trickle charger, plus battery desulfator.It restore your battery - automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge
Product features
Six Charging Mode & & Intelligent Detection - Intuitive LCD Display
- 12V STD Mode: Up to 14.4V, charging 12V standard lead-acid batteries(wet, Ca/Ca, EFB batteries);
- 12V AGM/C Mode: Up to 14.7V, charging 12V AGM battery or charging in winter mode for cold weather conditions with an ambient temperature of – 20°C to +5°°C;
- 12V GEL Mode: Up to 14.2V, charging a 12V GEL battery;
- 12V LFP Mode: Up to 14.6 V, charging a 12V lithium battery
- 6VSTD Mode: Up to 7.2V, suitable for charging 6V small batteries
- SUPPLY Mode: Work as a 12V Power supply
(BAt) - faulty battery
(FUL) - fully charged
(Err) - Connected with reverse polarity or short-circuit at the clamps
(!)- Reverse polarity or short-circuit
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