Question CMOS battery replacement ?

[Jon_Grose]

Hi everyone,

I have an HP 460 G7 Laptop which needs a new CMOS battery, however I've never changed a CMOS battery on a laptop before and have a few questions;

1) Are there different connector types depending on the Make/Model of the device? Or are they all exactly the same connector?

2) Providing it's the same battery code (CR2032), then in theory I could buy any laptop CMOS battery (CR2032 type) and this should work fine?

Thanks

 

[USAFRet]

#2 - Yes.

 

[CountMike]

Hi everyone,

I have a laptop (HP 460 G7) which needs a new CMOS battery, however I've never changed a CMOS battery on a laptop before and have a few questions;

1) Are there different connector types depending on the Make/Model of the device? Or are they all exactly the same connector?
2) Providing it's the same battery code (CR2032), then in theory I could buy any laptop CMOS battery (CR2032 type) and this should work fine?

Thanks

CR2032 is not explicitly laptop or even desktop CMOS battery but universal IEC standard battery used in many devices. Exactly same size, 2V 235mAh. Socket shape and placement maybe different but all fit. You can buy them everywhere batteries are sold, just ask or order by CR2032
Ps. watch for polarity when replacing.

 

[Misgar]

1) Are there different connector types depending on the Make/Model of the device?

Yes, there are several different connectors on batteries that plug into the laptop motherboard. There are also different size batteries. CR2032 is not used in all laptops. Some machines use smaller batteries.

https://www.ebay.co.uk/itm/326150112975?_skw=laptop+cmos+battery&itmmeta=01JQ8Z7T2Y755TB7TT9SBX4MRZ&hash=item4bf00fc6cf:g:v5wAAOSwkARd9-UX&itmprp=enc:AQAKAAAA8FkggFvd1GGDu0w3yXCmi1fOPIp3O5--M3WEorDFT1cUCiqBAFSoZfIinNO7GKc4HTKSj4xNJuOURAherqzBWB5RRNDPSeygXCMSNW9NYchZu8sMnP4+N2zbY9n59V2JqTuJmG1ZSzelx5TZgryJzZjJOb1UJ5jdej0Ydi6odw6D7N4X7zejTPwgDZfk0vF6+6Fcew++V476ALxSCKP1b5HntshkblUtI7lfOWXmsgoLFot0MBNoR9SkuPXuUdhaHQBZbMAJSp1xkJEW5E/v7yTuOy3GaBmgshyMececYS8jamnGzyw/I5+JvyxNkCdZcw==|tkp:BFBMyqGfn7pl

If you're unlucky, you'll find the battery is soldered to the laptop motherboard.

My advice is to open up the laptop, locate the battery (sometimes they're hidden under something else or on the "wrong" side of the motherboard) and check the size and connection type.

It can be a 5 minute job or take more than an hour, especially if you have to remove the motherboard and/or unsolder the battery.

Is this your laptop?

View: https://www.youtube.com/watch?v=fBC5lrCfiho

 

[bill001g]

Do not overpay for the battery you do not need some fancy laptop battery. Not sure if they still sell those with all the price increases but you used to be able to get 2 in a package at the dollar store.

 

[Ralston18]

Agree with @bill001g.

No need for fancy batteries.

However, I would be very wary of disount stores, discount bins, off brand batteries of any sort.

Worth a couple of extra dollars to buy at known big box stores that are likely to carry brand name products and have a good turnover rate with respect to batteries of all sorts.

Ensure that you can view the batteries directly and read dates.

Cheap batteries will soon simply die at best. Corrode, swell, or leak at worst.

Especially if they have been stuck in some ship container or warehouse for months.

And sold at a lost to the discounters.... Maybe repackaged for bulk sales.

If something I buy comes with generic batteries then my rule is to replace those batteries as soon as possible.

Usually AA, AAA, or CR2032 so not that much cost involved.

Just my thoughts on the matter.

 

[Misgar]

Do not overpay for the battery you do not need some fancy laptop battery. Not sure if they still sell those with all the price increases but you used to be able to get 2 in a package at the dollar store.

Good luck trying to solder flying lead (pigtail) from the old battery on to a standard (bare) CR2032. Most CMOS battery connections are welded, not soldered, to reduce heat damage. N.B. I like the typo CR20302.

I've not seen insulated laptop batteries (complete with pigtail and small connector) for sall in any normal shop or supermarket. You'd probably find some in a computer store specialising in spare parts. All three of the laptop batteries I changed recently were similar to this, on a Dell, Acer and Lenovo.

That's why I suggested opening up the laptop and checking what type and size you need. A standard (bare) button cell might not fit. Check the video I linked. There are several different connector types on the end of the pigtail. Get the correct version to make life a lot easier.