ENERpower Softpack 48V 14S6P 20.10Ah with BMS Pedelec Battery (10×9) DIY 35E

470.00 Inc. 19% Vat.

Rectangular ENERpower Softpack Battery 48V (14S6P) 20.10Ah for Pedelecs & eBikes DIY – square.

Important general information

The 48V (50.4V-51.8V) batteries in softpack in format 14S, which we assemble, have 2 formats – square and rectangular. The batteries are assembled with cells-holders made of plastic.

Charging is enabled with a DC round plug (5.5 mm / 2.5 mm); discharging is enabled with a discharge cable with XT90 connector. A safety fuse of 30A in a water resistant holder limits the current rate.

In the square version, 10 cells are used as the longest side (200 mm). We assemble this type of battery in formats  14S4P (10×6), 14S5P (10×7) and 14S6P (10×8).

In the rectangular version, 13 cells are used as the longest side (280 mm). We assemble this type of battery in formats 14S4P (14×4), 14S5P (14×5) and 14S6P (14×6).

The BMS (Battery Management System) is always mounted on the longest side of the battery. At this point the battery is approx. 10 – 15 mm thicker.

The softpack batteries are manufactured with FR4 isolation, inflammable and flame-retardant composites consisting of epoxy resin and fiberglass cloth. FR-4 is used, inter alia, as an electrically non-conductive carrier material for electrical printed circuit boards.


  • High quality assembling – Made in Germany
  • Assembling Just-In-Time
  • BMS with an integrated balancer
  • BMS with protection against overcharge, deep discharge, over discharge (temperature control)
  • Assembly with battery cells from Samsung SDI or Sony (depending on availability)
  • Direct from the manufacturer
  • Rechargeable – even after 300 charging cycles 80% of the original capacity is still available.
  • No memory-effect – charge the battery whenever you want
  • Weight: approx. 4.5 Kg
  • Environment friendly according to EU-Guidelines 2002/95/EG (RoHS)

Technical Details

  • Li-ion battery cell: Samsung SDI INR18650-35E
  • Voltage (nominal): 48V (50.4V-51.8V)
  • Capacity: 20.10Ah
  • Energy: approx. 1010 Wh
  • Configuration: 14S6P
  • Format: 10 x 9
  • Internal resistance: < 75 mOhm
  • Charging voltage: 58.8V
  • Maximal charge current: 5A
  • End-of-discharge voltage: 42V
  • Continuous discharge current: 20A = 1050 Watt
  • 10 Min. discharge current: 25A = 1200 Watt
  • 5 Sec. discharge current: 30A = 1440 Watt
  • Constant load per cell: approx. 5A or 7.50A in peak load.


  • 200 mm length
  • 140 mm – 155 mm width
  • 70 mm height
Weight 3.2 kg
Dimensions 38.5 × 11.0 × 7.5 cm