Connect two CrystalSky & Cendence Intelligent Batteries and charge them in sequence. The battery with more stored power will charge first.
The 57 W battery charger does not supply enough power to charge batteries and other devices connected to the USB port simultaneously. DO NOT use the USB port to charge another device when charging batteries.
Compatible Battery Model: WB37-4920 mAh -7.6 V
Weight: 138 g
Operating Temperature: 41–104° F (5–40° C)
Charging Time (Single): 71 min
- Can hold 2 x batteries
- Charge them in sequence
- Battery with more power charges 1st
- Must have item