Project Description

  • 24V 20AH lithium ion battery

24V 40AH LiFePO4 Lithium Ion Battery

  • Drop-in replacement for lead acid battery

  • More than 10 years life cycles

  • Wide operating temperature range

  • Steady output voltage

  • Safety Protection: Overcharge protection, Over discharge protection, Short-circuit protection

  • Low self-discharge, can long time storage

  • Green Energy without contaminants

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Nominal Voltage25.6V
Nominal Capacity40Ah
Resistance≤ 40 mΩ
Efficiency 99%
Self Discharge<3% per Month
Maximum Modules In Series1
Max Continuous Discharge Current30A
Peak Discharge Current70A(7.5S±2.5S)
BMS Discharge Current Cut Off120A±15A(9ms)
Recommend Low Voltage Disconnect22V
BMS Discharge Voltage Cut Off16V (2±0.08vpc)(140±60ms)
Reconnect Voltage18.4V (2.5±0.1vpc)
Short Circuit Protection200-600μs
Recommend Charge Current10A
Maximum Charge Current30A
Recommend Charge Voltage28.4V-29.2V
BMS Charge Voltage Cut Off31.2V (3.9±0.025vpc)(1±0.3s)
Reconnect Voltage30.4V(3.8±0.05vpc)
Balancing Voltage28.8V(3.6±0.025vpc)
Discharge Temp. Range-20℃ to 60℃
Charge Temp. Range0℃ to 45℃
Storage Temp. Range-5℃ to 35℃
BMS High Temp Temp Cut Off70℃
Reconnect Temp50℃

 9.3” 6.2” 6.5”28.7Lbs


  • Never connect the positive and the negative of the battery with metal
  • Never ship or store the battery with metal
  • Never cut or puncture the battery
  • Do not expose the battery to water
  • Do not expose the battery to fire & high temperature

Storage &Non Use

  • Storage in a dry place with temperature of not exceeding 30°C
  • For long term storage keep battery charged 30%-50% of capacity
  • Do not storage battery with metal
  • Use terminal post covers to prevent any short circuit circumstance

Additional Product Information

The Lithium battery makes every attempt to verify that its products are used and designed for your application. For additional questions or concerns, please contact with Bonnen or your distributor.