Since there has been a lot of talk lately about different battery types with the addition of the two new omg mods, and some confusion it seems on what should and shouldn't be used with them, figured it was time to delve into mod battery talk.
icr- Lithium cobalt rechargeable. These batteries store the most mah, but are also the most unstable. This is why they are each given a protection circuit. Never use one without protection in any pv. All the batts carried for the omgad are icr protected and those should be the only batteries used in the omgad. Same goes for any other simple mod (there's quite a few of them out there).
imr- lithium manganese rechargeable. These are safer chemistry, have lower internal resistance, can't hold as much mah as their icr brethren but counteract that with a high amperage output. These don't have protection circuits, because of the safer chemistry but can still fail (there's a thread here on ecf showing what happens with a failure of an 18650 imr), and because of the amount of power they can unleash in a hurry when they do fail it isn't pretty. These are not sold by V4L currently, and the only mod they sell that you can natively use them in without worry is the vv (has built in amperage limiting, voltage cut off at ~3.23v, etc. VV mods use these because they need the extra amperage to convert to voltage. VV mods are also smarter mods (in most cases, there's a few questionable ones out there) which means they have built in fail-safes. The batteries don't need protection because the mod gives the protection so to speak.
So if you're using a simple mod, only use protected batts. The best rule of thumb is to only use the batts recommended by the mod distributor/maker.
icr- Lithium cobalt rechargeable. These batteries store the most mah, but are also the most unstable. This is why they are each given a protection circuit. Never use one without protection in any pv. All the batts carried for the omgad are icr protected and those should be the only batteries used in the omgad. Same goes for any other simple mod (there's quite a few of them out there).
imr- lithium manganese rechargeable. These are safer chemistry, have lower internal resistance, can't hold as much mah as their icr brethren but counteract that with a high amperage output. These don't have protection circuits, because of the safer chemistry but can still fail (there's a thread here on ecf showing what happens with a failure of an 18650 imr), and because of the amount of power they can unleash in a hurry when they do fail it isn't pretty. These are not sold by V4L currently, and the only mod they sell that you can natively use them in without worry is the vv (has built in amperage limiting, voltage cut off at ~3.23v, etc. VV mods use these because they need the extra amperage to convert to voltage. VV mods are also smarter mods (in most cases, there's a few questionable ones out there) which means they have built in fail-safes. The batteries don't need protection because the mod gives the protection so to speak.
So if you're using a simple mod, only use protected batts. The best rule of thumb is to only use the batts recommended by the mod distributor/maker.