12000mAh Replacement Battery for JBL Charge 4, Charge 4BLK, Charge 4J, CHARGE4BLUAM，Fits Part No 1INR19/66-3, ID998, IY1068 with Installation Tools (NOT for Charge 4Q)

I bought this to replace the old battery in my jbl charge 4 (battery would charge slow) after installing new battery, it does not take a charge at all so this has not worked for me.

Your JBL Charge 4 got battery flat and the original replacement is expensive? This HUAENG replacement battery is a solution.At a very reasonable price, this HUAENG replacement battery helps our JBL Charge 4 battery status back to normal as the original one. The replacement battery fit our JBL Charge 4 really well and charge without a single problem.The installation process is pretty easy and straightforward:1. Take off the grille2. Take off the passive bass radiators on two sides3. Take off the back cover5. Take off the battery cover6. Replace the battery with this new HUAENG replacement battery7. Revert the process to reassemble the speaker (make sure reseal the passive bass radiators for waterproof)Overall, I would like to recommend this replacement battery due to its good quality and cost effective.

This battery appears to be of good build quality. It’s small, compact, and perfect for my application. To be honest, I am repurposing this battery for some microelectronics projects. Having such a large capacity of 12,000mAh should last a very long time when powering a low-current circuit. I can now deploy my project without worrying about checking the battery status, as this will power it for an extended period. It looks like a quality item, and I would highly recommend it to anyone looking to use it as I have.