3.7v 4800mAh input DC5V1A battery pack for an LED light connected to the pack by USB. The light works with the USB connected to any USB charger socket- is any battery pack of different voltage/mAh ol to replace the old battery with or should it be 3.7v 4800mAh for it to keep working long term?

 

So the battery itself is 3.7 4800mAh ??? Some manufacturers call these 4.2V , others 3.6V or 3.7V it's the same cell .... single cell lithium ...

You want to replace the cell ??? you can replace it with any capacity (mAh) as long as the voltage is the same .... higher mAh will take longer to charge , and run longer before needing recharge.

 

Sorry this might make more sense- so I know I can get a battery pack for phones so I could get a 4.2v with any mAh? I need the light to work full power for several hours

 

Since you need a USB connection which is 5V. You can use any battery bank for instance you can use this 10,000 mAh for longer run time:
https://www.amazon.com/Anker-PowerC...VPDKIKX0DER&pf_rd_r=XPKJDHKYJB00G9B860AD&th=1

I don't like Chinese specs... I believe what the "capacity" is trying to tell you is that there's a 1 cell lithium ion battery on board.

 

Thank you so much x