2Pack 20Ah Rechargeable LiFePO4 Battery Built-in BMS Emergency Lighting Router

????????? MHPOWOS 12.8V 20Ah Lithium LiFePO4 Battery Batteries Deep Cycle for for various application such as Lawn Mover,Outdoor Camping,Home Garden energy storage, Off-grid living, Ride-on toys and Fishing Lamps Why Choose MHPOWOS 20Ah LiFePO4 Battery? Cycle Life more than 3000+ Deep Cycles,10 Years Life Span,5.5lb Weight Lighter than Lead-Acid Battery,More environmentally friendly and safer than lead-acid battery,Grade A+Cell,63% increase in cell efficiency,10 years Warranty,Safety and Reliable FCC,CE,EMC,RoHS certificates. Please Ensure that the battery is used under the conditions of the specification parameters. Battery Capacity:12.8V, 20Ah,Color:Black,Battery Case Material:ABS,Rated Voltage:12.8V,Energy:256Wh Maximum charge voltage:14.6V,Standard charge current:4A,Minimum discharge voltage:10V,Maximum pulse current:28A±5A（≥3S),Cycle Life:Greater than 3000 times,Discharge temperature:-10°C~65°C,Charging temperature:5°C~45°C.Chemical Composition:Lithium Iron Phosphate (LiFePO4),AC Internal Resistance Less than 100mΩ. Dimensions:180X166X75mm(6.5in*2.9*7in),Item Weight:5.5lb Easily mounts to ride-on toys without worrying about overweight batteries.Various application is such as Mower,Outdoor Camping,Home Garden,Ride-on Toys,Fishing Lamps,Kids Scooter and Kids Power Wheel. MHPOWOS 20Ah Battery Capacity: Up to 4 batteries in parallel,Battery Voltage:12.8V,Discharge Current:80A,Power:1024Wh.Up to 4 batteries in series,Battery Voltage:51.2V,Discharge Current:20A,Power:1024Wh. Battery Performance Test: Battery Capacity,Cycle Life.Self-discharge,Charge and discharge Temperature,Mechanical Test,Extrusion Test,Acceleration Shock test,Vibration Test,Free Fall Test A+ Grade Cell Specification: 3.65V Voltage Meter maximum Charge Voltage,2V Voltage Meter Minimum Discharge Voltage,Initial capacity More than 4950mAh,AC Impedance Less than 10mΩ,Standard Charge time:3 Hours as reference BMS Battery Protection Systems: Over-charge voltage protection,Over-charge voltage protection Release,Over-charge Delay time,Over-discharge Voltage,Over-discharge Voltage Delay time,Over-discharge voltage protection Release,Over-current Discharge protection,Over-current protection Delay time,Charge Recovery,Short Circuit Current Protection.Recover after 30 seconds after disconnecting the load.Mos-Rds Main loop electrify resistance Less than 40mΩ. Battery Connector M6 Cross Slot outer hexagon flat head with pad combination screws.Battery pack allows 4 series Connection, 4 parallel connections. When multiple packs are used in parallel, ensure that the maximum voltage difference between each pack is less than 1V before paralleling. WHAT’S INCLUDED: 2pieces*20Ah LiFePO4 Batteries&Manual,4pieces*M6 Screws(10mm) Precautions for use Do not expose the battery or put it into fire.Do not reverse the positive and negative terminals of the battery for charging.Do not short-circuit the battery.Avoid excessive physical shock or vibration.Do not disassemble, deform, knock, throw or step on the battery.Do not wet or immerse the battery in water.Do not use different types of batteries together.Keep away from children.Charge under proper conditions.Do not use or leave the battery in high temperature conditions as this may cause overheating fire or malfunction.Do not charge with a defective charger.Do not charge continuously for more than 24 hours