Efest Purple IMR18650 2900mAh 3.7V Flat Top
Safe chemistry Hi Drain 35A (pulse mode) LiMN 3.7V rechargeable 18650. These cells can handle high amperage and is safe to use in series / multi-cell applications. Can be charged with any LiIon battery charger with 4.2V output. LiMN chemistry batteries do not require the use of protection circuits. Price is per battery
- Capacity: 2900mAh
- Min. Capacity: 2900mAh
- Nominal voltage: 3,7V
- Charge voltage: 4,2V ± 0,05
- Discharge voltage: 3,0V
- Max Continuous Discharge Current: 25A (4C)
- Max. Pulse discharge current: 35A (14C) ( PULSE MODE)
- Max. charge current: 1A (1C)
- Positive pole: Flat Top
- Protection circuit: no (unprotected)
- Chemical composition: LiMn (IMR)
- Diameter: 18,30mm ± 0,1
- Height: 49,80mm ± 0,1
- Weight: 40g ± 1
- Charging methode: CC-CV
- Color: Purple
-These cella are 25A continous discharge and 35A pulsed discharge batteries. Operating these batteries @ or near the Pulse rate of 35A will reduce the safetly factor to near 0.
-Do not over-discharge/overcharge
-Recharge empty batteries ( resting voltage ~3.6V ) as soon as possible. Leaving LiIon 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.
Attention : 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 version WF-139 charger ). Please check the voltage of them right out of the charger to see if they are above 4.20V when fully charged with your charger. Overcharging above 4.25V may shorten life/cycles. Above 4.50V may even pop them or making them leak. DO NOT use the charger if it seems to overcharge IMR cells.
*Note - In some applications a magnetic spacer may be required to make proper contact.
NOTE: Use special caution when working with Li-ion 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 Li-Ion batteries and chargers. We only recommend using Lithium Ion rechargeable batteries with a control circuit (protection PCB) to assure safe charge, discharge, etc, use of lithium ion batteries with a protection circuit is potentially hazardous.