1. LynnWooD's Avatar
    Won't charge over heating very quickly and has to be cheap.
    05-11-2016 03:44 AM
  2. hallux's Avatar
    Did you try searching Google?

    http://www.amazon.com/ZTE-Battery-Li...cUvbUpU5171511
    Smartphone Battery for ZTE Obsidian Z820 Li3818t43p3h635450 1800 mAh | eBay

    Phone batteries are not off-the-shelf purchases, every device has its own size/shape battery.
    05-11-2016 04:46 AM
  3. JoeMule's Avatar
    The short answer to your question is: The only battery that will work in your ZTE Z820 Obsidian is a ZTE Z820 battery.

    Sorry, but cell phone batteries are not like 'double-A' or 'C-cell' ... there are no standardized sizes, so you need to find a battery that is specifically designed to work in that specific phone ... search on Amazon and eBay for 'ZTE Z820 battery'.

    The battery in my son's ZTE Obsidian just died completely, so we're in the same boat ... looking for a new battery. So far the cheapest replacement battery I could find is this rechargeable one on eBay for 16 bucks: Smartphone Battery for ZTE Obsidian Z820 Li3818t43p3h635450 1800 mAh | eBay

    There are a couple more listings on eBay for Z820 batteries but they are listed at higher prices than that first item. The only battery I found on Amazon is the same as that rechargeable one on eBay, but for a couple dollars more.
    08-30-2016 08:13 PM
  4. franklinextresbf's Avatar
    09-07-2016 05:52 PM
  5. Andie708's Avatar
    @JoeMule: It's been three months since your post. Which battery did you end up buying? Has it worked well? Does the phone's charging circuit properly handle a battery that isn't 1650 mAh like the original battery? Is there a way to be fairly certain the "new" battery isn't really a counterfeit, used battery?
    Thanks in advance for your help,
    Andie
    12-01-2016 09:22 AM
  6. Andie708's Avatar
    The original battery in my ZTE Obsidian Z820 is rated 1650 mAh, but when I google for Obsidian specs I find that the battery is 1800 mAh. I presume this means ZTE changed from 1650 to 1800 (probably after reviews that complained the phone's runtime was too short). The question for owners of older Obsidians that came with a 1650 mAh battery is whether they can replace its 1650 mAh battery with an 1800 mAh battery. Would ZTE have needed to tweak anything in the Obsidian's software or hardware to get an 1800 mAh battery to operate properly?
    12-06-2016 02:49 PM

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