About Payment 
 Shipping & Cost
 Battery SDS
 Battery Terminology
 Battery Knowledge
Privacy Policy
 Export restrictions


Shopper Award
Security Verified Seal

Custom Li-Ion 18650 Battery: 50.89V 28Ah (1425Wh, 40A Rate, INR18650 MJ1)

Your Price: $1,566.00
In Stock

Product ID # 11044
Part Number:


*Important Shipping Regulation This pack is for testing (prototype) only. It has not been UN38.3 tested yet.  Read more...
  • High Power 50.89V 28Ah is made by LG Lithium 18650 Rechargeable Cell (14S8P) 40A Continous Drain Rate
  • In 8x7 x 2 stack configuration, PCM on top.
  • Wrapped by heavy duty shrink wrap
Voltage Nominal: 50.89V; Charge Cut off: 58.8V; Discharge Cut off: 35V
Capacity Nominal: 28Ah; Minimum: 27.2Ah
  • Charging terminal: 6" 14AWG wire with Anderson connector
  • Discharging terminal: 6" 12AWG open end wires
Protection 1x 40A PCM installed for protection
Cycle life >300 
Charge Current Standard: 14A / 0.5C
Maximum: 28A / 1C
Discharge Current Standard: 5600mA / 0.2C
Maximum: 40A, limited by PCM
Dimensions (LxWxH)

6" x 5.25" x 5.7" (155mm x 132mm x 142mm)

Weight (approx.) 12lb7.1oz (5646kg)
Temperature Charge: 0 to 45°C
Discharge: -20 to 60°C
Storage: 1 month: -20 to 60°C; 3 month: -20 to 45°C; 1 Year: -20 to 20°C


  • Replace 48V NiMH / Lead Acid battery pack with much lighter weight  for drain rate <40 amp


  • Please wait 30 minutes after charged to allow PCM to balance the cells to achieve the best performance
  • Please never discharge the battery pack beyond its Max. rating
  • For safety warning please see the link here
  • California residents: Warning: Cancer and Reproductive Harm - See Prop 65 Warnings

Related Products

Product Reviews

(0 Ratings, 0 Reviews)
What to consider when designing Lithium Batteries?
Bluetooth Technology for Lithium-ion/LiFePO4 Batteries
UN 38.3 Safety Test

We own a national standard UN38.3 testing lab. We can provide UN38.3 test service to our customer.

If you want to set up your own lab, we also provide UN38.3 & IEC62133 equipments and onsite training. Email us for the quote and lead time.
Lithium Battery Shipping Regulation
Recommendations on How to get ≤30% Rated Capacity for Shipping
Thermal Abuse Test for IEC62133
Mailing Lists