Please verify the video's credibility and ensure it is safe to use.
Please verify the video's credibility and ensure it is safe to use.
I possess an outdated Nokia Asha 309 that I haven’t used in about two years. It’s now eleven years old, and the battery performed well during my last session—about ten hours of Bluetooth music streaming. Recently, I attempted to revive the device, but the voltmeter only displayed 0V. I’ve tried searching for replacement batteries, yet I can’t locate any. If this tutorial is reliable, I’d like to try it to bring my old phone back to life. Please verify whether this guide is safe and authentic. The discussion appears supportive, and the revival of the dislike button has added some challenges.
This link leads to an item on eBay with the ID 374008637585. It appears to be a product listing, possibly for a specific item or service.
The video isn't something I'd attempt. I've handled similar issues successfully before. You probably can't restore the battery, it seems it's beyond repair at 0V. I've seen tablets where the battery was too weak for the charging system to activate. In those instances, I connected a power source using wires as demonstrated in the video, but with careful voltage control—not just flooding the battery. This gave me sufficient charge to restart the device. But even then, the batteries weren't fully charged. A completely flat battery is unlikely to recover and may cause damage. It's best to replace it with a fresh one, like the one referenced above.
I've successfully used it before with a 9-volt battery, but only when the voltage and current were properly controlled.
The charger supports two settings—6V and 12V—making it suitable for larger batteries.
I applied it for a project...charging a 12V battery which resembled one from two-wheelers...that’s the situation then... Will an outdated adapter work? Like I have one that delivers 6V and about 0.5A...can an old charger from an old phone be used?...Just connect the charger terminals (after removing the pin) to the battery?
6V is still a lot (I've always used 5 volts or less). You aren't trying to fully charge the battery with the charger either. I'm also guessing this is likely a car battery charger or something, which is not meant for Li-ion batteries, which also makes it dangerous. You need to get just enough of a surface charge on the battery that the phones charging system can take over and charge it properly. With it being at 0 volts, I have some doubts it will come back. Watch for swelling. Last thing you want to do is have it fail in an unsafe manner or have a failure. In theory most batteries should have safeties, but the key word is should. Don't want to have a fire just because you want to tinker with a dead battery.