ENERpower 3S7P Battery-Tank 11.1V 20.3Ah Li-Ion DIY Open-End Y-Form

122.00 Inc. 19% Vat.

High quality battery tank 3S7P (10.8V – 11.1V), assembled with INR18650-29E.

The ENERpower 3S7P is a li-ion battery-tank for divers, which prefer to switch and install their batteries themselves (DIY). The battery is protected with PCB (protection circuit) and assembled with an open-end cable for self-soldering.


  • With 21 x INR18650-29E Samsung SDI li-ion cells
  • 20.3Ah (ca. 225Wh)
  • With high quality PCB (protection circuit) of 5A (55W)
  • Rechargeable up to 500 times
  • Open-end cable
  • Energy saving ability for a longer runtime
  • Preserve 80% of its original capacity after 300 charging cycles
  • IC Protection / PCB with protection against short circuit, overcharge and deep discharge
  • No Memory effect – charge your battery whenever you want.
  • Environment friendly according to EU-Guidlines2002/95/EG (RoHS)
  • High quality battery cells with long lifespan and high stability

Technische Daten

  • Min. capacity: 20300mAh
  • Typ. capacity: 19250mAh
  • Nominal voltage: 10.8V – 11.1V
  • Charging voltage: 12.6V
  • End-of-discharge voltage: 9V
  • Configuration 3S7P Y-form
  • Weight: ca. 1150 g.
  • Length / width / height: ~ 200 / 55 / 55 mm
  • Protection circuit: PCB 5A
  • Max. energy: 50 Watt


  • The attached photos are for illustration only (different version).
  • Special modifications are available by orders from 10 units.