NOTE:These IMR cells have much lower internal resistance than regular LiIon 3.7V cells and they may end up with a higher ending voltage when charged in certain chargers ( especially older versions of the WF-139 charger ). Please check the voltage of your 18350 IMR battery right out of the charger to see if they are above 4.20V when fully charged with your charger. You can do this with a Multimeter Overcharging above 4.25V may shorten life/cycles. Above 4.50V may even damage them. DO NOT use the charger if it is overcharging IMR cells.
Other Caution Notes:
- Do not over-discharge/overcharge
- Recharge empty batteries (resting voltage ~3.6V) as soon as possible. Leaving batteries in discharged state will incur irreversible damage (capacity / cycle loss)
- Do not short circuit ( will release tremendous current )
- Do not dispose of in fire.
- Do not leave battery in Vehicles.
- Do not carry batteries loose in your pocket, purse or anywhere they can make contact with other metal objects..
- Never leave a battery charging unattended.
- Discontinue use of a battery if it looks worn, outer wrapping is torn, or it's acting unusual.
NOTE: Use special caution when working with Li-ion or Li-MN cells, they are very sensitive to charging characteristics and may explode or burn if mishandled. Make sure the user has enough knowledge of Li-Ion rechargeable batteries in charging, discharging and assembly before use. Always charge in/on a fire-proof surface. Never leave charging batteries unattended. We are not responsible for damage if there is any modification of the batteries/chargers in any form or shape (including pack making). We are not responsible for any damage caused by misuse or mishandling of batteries and chargers.
WARNING: LITHIUM BATTERIES HAVE INHERENT FIRE RISKS. ALWAYS USE CARE AND CAUTION WHILE HANDLING, CHARGING, AND STORING THESE BATTERIES. ALWAYS USE APPROPRIATELY RATED CHARGERS AND NEVER LEAVE CHARGING UNATTENDED. NEVER STORE LOOSE BATTERIES IN YOUR POCKET OR PURSE WHERE THEY MAY COME IN CONTACT WITH METAL OBJECTS SUCH AS LOOSE CHANGE OR KEYS AS THIS CAN CAUSE ANY BATTERY TO SHORT CIRCUIT. USE PLASTIC STORAGE CONTAINERS IF LOOSE BATTERY TRANSPORT IS NECESSARY.