AW 18650 2000mAh
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It depends how hard you are using them. I still have a couple of AW 2000mAh batteries in my rotation from when I purchased my first mod over two years ago. They are just now starting to show their age in not holding a charge as when new. For much of that time I was using standard resistance (2.5 ohm) cartomizers in a cartotank on a Provari.
Now, if you are pushing these batteries in the 0.6 to 1.0 ohm range, they may not last nearly that long. I have about 6 of these batteries, of different ages, in my rotation. It's my belief that if you use a larger number of batteries in your rotation, it will prolong their life expectancy. Batteries like some "rest time" between charge and discharge cycles. It helps to use a high quality charger, too. I've used a Pila charger in the past, and currently using a Nitecore Intellicharger i4.
"Since batteries are used in demanding environmental conditions, manufacturers take a conservative approach and specify the life of most Li-ion between 300 and 500 discharge/charge cycles."
"Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The shorter the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles to prolong life."
"Li-ion should not remain at the high-voltage ceiling of 4.20V/cell for an extended time. When fully charged, remove the battery and allow the voltage to revert to a more natural level like relaxing after exercise. Although a properly functioning Li-ion charger will terminate charge when the battery is full, some chargers apply a topping charge if the battery terminal voltage drops to a given level."
-- Battery University
Now, if you are pushing these batteries in the 0.6 to 1.0 ohm range, they may not last nearly that long. I have about 6 of these batteries, of different ages, in my rotation. It's my belief that if you use a larger number of batteries in your rotation, it will prolong their life expectancy. Batteries like some "rest time" between charge and discharge cycles. It helps to use a high quality charger, too. I've used a Pila charger in the past, and currently using a Nitecore Intellicharger i4.
"Since batteries are used in demanding environmental conditions, manufacturers take a conservative approach and specify the life of most Li-ion between 300 and 500 discharge/charge cycles."
"Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The shorter the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles to prolong life."
"Li-ion should not remain at the high-voltage ceiling of 4.20V/cell for an extended time. When fully charged, remove the battery and allow the voltage to revert to a more natural level like relaxing after exercise. Although a properly functioning Li-ion charger will terminate charge when the battery is full, some chargers apply a topping charge if the battery terminal voltage drops to a given level."
-- Battery University
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