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Smart Battery 12V 40AH Deep Cycle / Starting Lithium Ion Battery

12V 40AH Lithium Ion Battery
Price $579.99

Call for Availability 1-855-465-4844



Model SB40
Nominal Voltage 12.8V
Capacity (amp hours) 40AH
Charge Voltage 14.4v to 14.6V
Max Charge / Discharge Current 40A (amps)
Cold Cranking Amps 400A (amps)
Length 7.75"
Width 6.45"
Height 6.75"
Weight 13. Lbs.
Type LiFePO4

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The Smart Battery SB40 offers state of the art technology "Lithium Iron Phosphate" the safest and most robust lithium chemistry. Capable of reaching over 5000 cycles, The SB40 can be re-charged thousands of times providing 100% DOD (depth of discharge) The Smart Battery SB40 is perfect for boats, trolling motors, cars and almost any application that would use a 12V 40AH lead acid, agm or gel battery. 



  • Fully automatic built in battery protection system
  • Automatic low voltage cut off - 8v
  • Automatic over voltage cut off - 16v12V 100AH Lithium Ion Battery
  • Automatic short circuit cut off - instant
  • Automatic internal cell balancing 
  • High quality bolted cylindrical cell design
  • Built in cell safety fuse " Nano Cell Fuse Technology "
  • Long life 3000 - 5000 cycles
  • Lightweight - up to 70% lighter than lead
  • No voltage sag - faster cranking for motors and higher voltage for continuous consistent power. 
  • Dry Battery - no toxic lead or acid
  • Zero Maintenance 
  • No venting or gassing 
  • Heavy duty stainless steel bolts, washers and flat washers included
  • 99.1% efficient
  • Green ROHS compliant - No Lead
  • Use 100% of rated capacity 
  • Does not heat up during use
  • Connect in series or in parallel
  • One battery for 12v, 24v, 36, or 48v applications



SB40 Data Sheet





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