3.7v Li-ion battery pack chargers, 5v input micro USB
5v input micro USB li-ion battery packs charger with indicator LEDs; for 3.7v cell packs (including all Rude Nora caving lamp batteries). Can be connected directly to your mains phone charger, tablet, lap top, or a 12v car cigar - 5v USB adapter.
Constant current 1 amp charge*
*Constant current 1 amp charge, until 4.2v, then current decreases over time at constant voltage (the slower last 5% part of the charge cycle). Starts with a trickle charge if the battery voltage is fairly low, and has protection to guard against charging batteries if voltage has dropped too low. Blue & Red charge indication LEDs. Constant current element of charge cycle (1 amp) potentially limited by output rating of the USB power supply used, resulting in increased charging time. For optimum charging use high quality micro USB cable, as short as possible.
7.4v Li-ion battery pack chargers, 5v input USB
5v input USB li-ion battery packs charger with 'charging' and 'full' indicator LEDs for 7.4v cell packs. Connectors matching Scurion 7.4v li-ion battery packs. Can be connected to your lap top, or a 12v car cigar - 5v USB adapter, etc. Not the quickest as limited by USB output, but ideal for topping up or as expedition solution.