The 6M has a charge port on the side of the unit that supports COBRA branded module chargers only; the charger for the 18M, 36M, and 72M will also safely charge the 6M. Do not use any other type of charger as the voltage and current regulation are specific to COBRA in supporting optimal battery life, safe charging, and number of charge cycles.
COBRA offers three chargers: a single, 5-module, and 10-module option. The larger, multi-bay chargers, help reduce the number of power outlets used and can be built into permanent charging stations to assist companies with large quantities of COBRA modules.
To charge the module, place the charge plug into the charge port. The charge LED indicator on the front of the 6M will blink when charging and will go solid when finished charging. Once fully charged, the charger will only provide a small trickle charge as needed. However, it's always recommended to monitor your equipment when charging and to unplug your charger when fully charged. Charging a module from 0% to 100% takes about six hours. Note that the battery will lose about 0.3V per month max during storage, which equates to about 15% each life lost per month max.
For lipo battery best practices please see COBRA Lipo Batteries Best Practices and Procedures.