HY2120 - BB battery protection IC

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Diver300

Well-Known Member

Most Helpful Member

• Jan 31, 2016

• #1

I'm trying to repair a battery pack. The protection IC is an HY2120-BB. It works with a MOSFET, but it seems to be damaged. The data sheet is at **broken link removed**

Any idea where I can get one or two to repair the battery pack?

 

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Diver300

Well-Known Member

Most Helpful Member

• Jan 31, 2016

• #2

It looks like I can get a complete battery protection board for not much money on ebay.

 

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KeepItSimpleStupid

Well-Known Member

Most Helpful Member

• Feb 14, 2016

• #3

Source (aliexpress): **broken link removed**

 

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Diver300

Well-Known Member

Most Helpful Member

• Feb 14, 2016

• #4

Thanks for that, but it is a bit late.

I got a complete protection board from eBay for around £2.50 ($4 ish). That was stocked in the UK, easy to fit, and the battery pack is working now.

 

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KeepItSimpleStupid

Well-Known Member

Most Helpful Member

• Feb 14, 2016

• #5

I've ordered from Aliexpress before. There's like two ecommerce sites in China alibaba and aliexpress. The former is more commercial stuff. It's ebay-like, but not an auction. It just generally takes a while. Some ebay shippers are extremely fast.