18650 batteries

[bouncer]

I stripped this battery down today and was surprised when I found 10 18650 batterys in it.was thinking of using them for my t20 and my torch,do you think they would be ok.the batterys have this number on them.se us18650v/t v112ltg14r

[CustomRifleScopesUK]

Depends if you want protection or not, in a battery bank like that it would be inefficient to protect individual cells......the protection will be in one place within the circuit. So the individual 18650's probably wont have protection.

Hope this helps, Splatty

[sunndog]

they will be good quality batteries, but as said no protection on em....on a massive problem, a few of us that i know of have been using similar for years without issue

[phoenix]

Each cell will only be 1500mah which won't give a very long run time.
Also, they will be tagged cells which can have problems making contact in a T20
Lots of form members use Panasonics 3400mah which are protected.

Cheers

Bruce

[bouncer]

I have Panasonic batteries but I just thought I could use them as well.what do you mean by not protected.

[hibbydunk]

Lipo and Li-on batereies need protection to stop them over charging. With lipos as in romote control electric car racing if you over charge them they go on fire hence racing guys have fireproof wallets they charge their batteries in using chargers designed to be programmed for specific type and capacity of lipo battery. I assume in theory Li-on as in 18650 batteries have the same risk. if you buy protected ones then the built in circuit stops them overcharging. in your big pack for the powertool batery there would be a single circuit board protecting all the unprotected 18650 batteries. If you know little about batteries then stick to the protected ones less chance of cocking up and frying em. Hope that explains it sufficiently I am no expert so tend to go for safety first when it comes to batteries.

[Radagast]

The battery pack in the Tesla electric sports car uses Panasonic 18650s, IIRC. There have been several fires when the battery pack has been damaged. Check out Torchy's site, along with Budget Light Forums. Fires and explosions from 18650s are not unknown. Protection circuits reduce that risk.

[some bloke]

Like Adam says - umpteen of us use unprotected 18650's from laptops batteries etc - without ever finding any hint of an issue.... apart from modest capicity when charged in individual charging bays as found on intellichargers for example. Quality smart chargers analyse the charge status maybe hundreds of times during their charge.

They are 'free' and its no problem to carry a spare few more free ones with us to swap if needed.

Apparently issues will occur if the charge in them gets too low because of the absence of a cut out protection: Even when I have run them seriously low I have not found any issues - apart from one of my older chargers would not charge, possibly because of a protection device in the charger.

I'm not disputing what electronic experts warn us about, just saying that despite all the warnings - I have had no issues with them.