TrustFire IMR 10440 lifespan?

[Dooter]

How long do TF IMR 10440's typically last for you before they finally kick the bucket and won't charge anymore?

I've had 3 die after about 20-25 charges. At least I *think* they are dead - when I put them in my Trustfire charger, the indicator light does this wonky half-red/half-green thing.

That seems to be a really short lifespan... Is that normal?

 

[buGG]

i don't think trustfire actually makes any IMR/ LiMN batteries, but i know the ones you are talking about. are you using the trustfire tr-001 charger? if so that has two independent channels, meaning each is giving 450mA to whatever battery is in each slot. the 10440 battery, would have a max of about 280mAh, probably a little less though, so there's a potential for charging too rapidly, as well as overcharging an "unprotected" battery and potentially over-discharging and putting too great an amperage drain on them as well. not to say that any of this happened or this is the case, but these conditions are not unlikely and they would impact the performance of the battery, among other things, sooner or later. it could just be a bad batch though, and of course that charger, if it's the tr-001, can be a bit temperamental as well. these are just ideas based on the batteries being used, the charger i suspect is being used, the conditions they're being used under, etc. otherwise, a solid li-ion battery, and IMR applies here, should give you several hundred charge cycles, and i've used different "unprotected" 10440s with great success for hundred of charge cycles over the course of two years or more. hope that helps a bit.

 

[Dooter]

i don't think trustfire actually makes any IMR/ LiMN batteries, but i know the ones you are talking about. are you using the trustfire tr-001 charger? if so that has two independent channels, meaning each is giving 450mA to whatever battery is in each slot. the 10440 battery, would have a max of about 280mAh, probably a little less though, so there's a potential for charging too rapidly, as well as overcharging an "unprotected" battery and potentially over-discharging and putting too great an amperage drain on them as well. not to say that any of this happened or this is the case, but these conditions are not unlikely and they would impact the performance of the battery, among other things, sooner or later. it could just be a bad batch though, and of course that charger, if it's the tr-001, can be a bit temperamental as well. these are just ideas based on the batteries being used, the charger i suspect is being used, the conditions they're being used under, etc. otherwise, a solid li-ion battery, and IMR applies here, should give you several hundred charge cycles, and i've used different "unprotected" 10440s with great success for hundred of charge cycles over the course of two years or more. hope that helps a bit.

That is indeed the charger that I have...

Well, now that I know that, I am definitely not going to use that charger anymore on my 10440's.

What charger should I buy?

 

[buGG]

i'd recommend the ultrafire wf-138B. battery junction has it here, and vaporkings too, but it may be cheaper elsewhere. there used to be a nano charger for the 10440 as well, but not sure if they are still around. it was a single bay anyway, as opposed to the wf-138B. other brands and chargers exist, but this will serve you well if you use it as a dedicated 10440 charger. regardless, check the specs on anything else and don't use a charger with a current rate higher than 250mA for smaller batteries like 10440s.

 

[Dooter]

i'd recommend the ultrafire wf-138B. battery junction has it here, and vaporkings too, but it may be cheaper elsewhere. there used to be a nano charger for the 10440 as well, but not sure if they are still around. it was a single bay anyway, as opposed to the wf-138B. other brands and chargers exist, but this will serve you well if you use it as a dedicated 10440 charger. regardless, check the specs on anything else and don't use a charger with a current rate higher than 250mA for smaller batteries like 10440s.

Thanks so much for your help!

I feel a little more educated on battery chargers now!