Lifetime Battery  - Page 1
Forum section: electronics / general

author: zarish2021
author_rank: Newbie
timestamp: June 01, 2021, 05:07:07 pm
content: I want to know if the charging circuit here is successfulhttp://youtu.be/RRUBSWFemq8

author: tunk
author_rank: Super Contributor
timestamp: June 01, 2021, 05:32:14 pm
content: From a quick view, it doesn't look like there's anycharging current limitation (unless the BMS has some).And that battery won't last forever either.It might help if you draw the schematics.

author: Halcyon
author_rank: Unknown
timestamp: June 01, 2021, 07:40:59 pm
content: Kind-of spam'ish, might be a bot. I've placed the OP on the watch list. If nothing else, moved to Dodgy Technology.

author: Daixiwen
author_rank: Frequent Contributor
timestamp: June 02, 2021, 06:35:26 am
content: Indeed, no current or voltage limit, this is definitely dodgy. He is using the protection circuit from a dead battery, so there is at least overvoltage protection, but this is not a charge circuit. The protection circuit is just supposed to be an extra protection in case of a failure of the charger voltage limiter. If the protection circuit itself ever fails (*) the polymer battery will directly receive 5V (minus the 0.6V from the diode) and will probably ignite.USB chargers usually don't limit the current either and some can provide 2 amps or more. A 200mAh polymer battery won't survive long with such a treatment, but at least with such a high current the overvoltage protection will kick in pretty quickly.Besides, how is this useful anyway? I don't remember the last time I had to change any battery in a remote but it has been years.(*) the probability of the protection circuit failing is also higher in this case if charging with a higher current than designed for. They are usually protected against high current in the discharge path, but not in the charging path. Sending several amps through a small mosfet could destroy it and make it fail as a short, and then there would be no protection at all.

author: Haenk
author_rank: Super Contributor
timestamp: June 02, 2021, 07:42:29 am
content: Just use a bunch of regular low self discharge Eneloops or the like. They will last for a long time, are easily exchanged/recharged and certainly won't explode.Just say no to stupid ideas.

author: ebastler
author_rank: Super Contributor
timestamp: June 02, 2021, 09:22:16 pm
content: I can easily see this battery lasting for the lifetime of the remote control. When the battery dies, it takes the remote control with it...

author: agtrbt
author_rank: Contributor
timestamp: June 11, 2021, 06:37:07 am
content: a good quality zinc carbon cell or CR2032 / CR123A will last a lifetime of the mother device.

author: AVGresponding
author_rank: Super Contributor
timestamp: June 11, 2021, 07:49:06 pm
content: Quote from: agtrbt on June 11, 2021, 06:37:07 amThe manufacturers design lifetime..?

author: agtrbt
author_rank: Contributor
timestamp: June 13, 2021, 08:55:21 am
content: software wise, outdated protocols and firmware EEPROM wearout.hardware wise, capacitor qualityI have overhauled a LG monitor with bad caps , gave it 8+ years more life.

author: hexreader
author_rank: Frequent Contributor
timestamp: June 20, 2021, 02:35:30 pm
content: Definitely a multi-forum, serial spammer