# Can someone help me on how to charge this Battery? [closed]

I have a ES cordless drill and it has a Li-Ion battery (model is ES GB118L20).

The original battery charger is missing and there is almost no way for me to get one in my country.

The Battery has 5 Samsung INR18650-20R 3.7v cells connected in series.

The battery pins are BATTERY+, BATTERY- and 4 pins marked BATTERY1, BATTERY2, BATTERY3 and BATTERY4 which are connected between + and - of batteries (probably used for balanced charging). Also there are T, BS and ID pins which I'm not sure of their role.

I tried charging the cells one by one by connecting a TP4056 charger to each battery pin (for example [BATTERY- and BATTERY1] or [BATTERY1 and BATTERY2], but was not successful. It didn't even start charging it.

Can anyone help me how to charge this thing?

## closed as off-topic by Leon Heller, Michel Keijzers, Finbarr, Dmitry Grigoryev, laptop2dMar 15 '18 at 17:31

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "Questions on the use of electronic devices are off-topic as this site is intended specifically for questions on electronics design." – Leon Heller, Michel Keijzers, Finbarr, laptop2d
If this question can be reworded to fit the rules in the help center, please edit the question.

• it is unclear what is the brand name of the cordless drill ... is it just ES? ... is there another name? – jsotola Mar 14 '18 at 17:09
• Yes, the brand is ES. It's a Korean brand (probably LG Industrial branch). the website is es-is.co.kr/html_e/index.html – Euphoria Mar 14 '18 at 17:17
• And this is the link to the original charger: es-is.co.kr/bbs/… – Euphoria Mar 14 '18 at 17:17
• Can you measure any voltages across the individual cells? – Finbarr Mar 14 '18 at 18:04
• Are those cells as easy to remove as they look? If so, you could easily get a charger from any vape shop. Perhaps not the most convenient option, but it would save you from having to reverse engineer the system. – Phil C Mar 14 '18 at 18:06