Li-ion Batterypack 8.4V, 26Wh

Batteries with the highest capacity

Batteries with the highest real capacity you can buy now (2025). The cells have a measured capacity of 4000mAh. The battery also contains a powerful protection circuit that protects the cells from under-discharge, over-discharge and short circuit. The circuit adds only 6 mOhms of resistance by using state-of-the-art components. The connector is high quality and rated for up to 7A. The cable is our highly durable PUR cable that we use on all of our high performance headlamps.

Durable cable and quality connector

Broken cables and worn connector contacts are one of the most common headlamp failures. Reliability is one of our main goals, so we pay the utmost attention to this area. Thus, our batterypacks have cables and connectors that no one else has.

The connector is DC 5.5/2.1 (i.e. compatible with all manufactured headlamps and batterypacks), and we manufacture them by injection molding right here. It is rated for up to 7A current and the contact holds for a long time. The contacts hold together so tightly that spontaneous disconnection is impossible, but at the same time just enough so that they can be disconnected in worse conditions (e.g. wearing gloves in winter).

The cable is a robust PUR cable, flexible up to -30°C and maximally resistant to wear and twisting. It is grey in colour and has a fixed length (no longer twisted)!

For information, we present the manufacturer's specification, which confirms the exceptional durability of the cable used:

• Guaranteed permanent application in multi-shift operation under extreme high bending stress
• Test of alternating bending cycles approx. 10 million
• High resistant to mechanical stress
• High property of alternating bending strength
• Long life durabilities through low friction-resistance by using the PP insulation
• High tensile strength-, abrasion- and impact resistant at low temperature

Weight:135 gr.

Compatible chargers: all li-ion chargers with an output voltage rating of 8.4V. For normal everyday charging, you can use 0.5A and 1A charger speeds. Faster charging generally reduces battery life.