LiitoKala Lii-S2 Battery Charger, 2 Slots, USB-C, for 18650 / 21700 / AA / AAA

The LiitoKala Lii-S2 is a compact two-slot charger for the rechargeable batteries used in UV flashlights. It charges 18650 Li-ion cells such as the EVE 35V and AloneFire batteries from our shop, as well as 21700, 26650, 14500 and other cylindrical sizes, and AA and AAA NiMH batteries.

Each slot works on its own and recognises the battery type automatically. You can insert a battery either way round, and the LCD shows the voltage and charging progress for each slot. The charging current is selectable: 0.5A or 1A per slot, or 2A when only one slot is in use. It takes power through a USB-C port, and the box includes a USB to USB-C cable.

Runs on the USB charger you already have. The box holds the charger and a USB to USB-C cable, with no wall plug, so you don't end up with yet another adapter in the drawer. Plug it into any phone charger or power bank rated 5V 2A or more and it is ready to go.

The Lii-S2 has also been through an in-depth independent test at lygte-info.dk, a well-known site for battery and charger reviews. The tester found that it charges Li-ion cells correctly, with a proper constant current, constant voltage (CC/CV) cycle, and concluded that it works well. The test also showed why the power source matters: on a weak USB supply it can stop early, so a 2A adapter gives the best results.

Features:

• Slots: 2, working independently
• Input: 5V 2A via USB-C
• Charging current: 0.5A or 1A per slot, 2A with one battery
• Batteries: Li-ion, IMR and LiFePO4 (18650, 21700, 20700, 26650, 18350, 16340, 14500, 10440 and more), NiMH and NiCd (AA, AAA, C, SC)
• Display: LCD with voltage and charging progress
• Protection: overcharge, short circuit and reverse polarity protection, faulty battery detection
• Size: 118.5 x 63 x 30mm
• Weight: 84g (without cable)
• In the box: charger and USB to USB-C cable (no wall adapter)

Works with these batteries from our shop:

• EVE INR18650-35V Battery, 3500mAh (charge at 1A)
• AloneFire BRC 18650 Battery, 2000mAh (charge at 1A)