![Is there any value in these old batteries which don't hold a charge? The Optimas were quite expensive maybe $200-$300 new : r/MechanicAdvice Is there any value in these old batteries which don't hold a charge? The Optimas were quite expensive maybe $200-$300 new : r/MechanicAdvice](https://preview.redd.it/7097gfb40rd91.jpg?width=640&crop=smart&auto=webp&s=fffb0e27ed95d913611432cb10645f95f23997ec)
Is there any value in these old batteries which don't hold a charge? The Optimas were quite expensive maybe $200-$300 new : r/MechanicAdvice
![How to Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore « Hacks, Mods & Circuitry :: Gadget Hacks How to Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore « Hacks, Mods & Circuitry :: Gadget Hacks](https://img.gadgethacks.com/img/36/72/63505937271268/0/fix-dead-lithium-ion-batteries-wont-hold-charge-anymore.w1456.jpg)
How to Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore « Hacks, Mods & Circuitry :: Gadget Hacks
![Trying to revive this old completely discharged phone battery. I tried charging each cell individually using a universal Li-Ion charger that automatically determines polarity. Now, one cell is at 550mV, the other Trying to revive this old completely discharged phone battery. I tried charging each cell individually using a universal Li-Ion charger that automatically determines polarity. Now, one cell is at 550mV, the other](https://preview.redd.it/trying-to-revive-this-old-completely-discharged-phone-v0-s5b5q1yn6vy91.jpg?auto=webp&s=d0a25c4af020bb2dfd08bcad6419f4ec13486fbe)
Trying to revive this old completely discharged phone battery. I tried charging each cell individually using a universal Li-Ion charger that automatically determines polarity. Now, one cell is at 550mV, the other
![Amazon.com: Old Skool Play & Charge Kit Battery and Charging Cable Compatible with Xbox 360 -Black : Video Games Amazon.com: Old Skool Play & Charge Kit Battery and Charging Cable Compatible with Xbox 360 -Black : Video Games](https://m.media-amazon.com/images/I/81dYVQg9v8L.jpg)