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Good evening. I have just removed a rechargeable battery pack from a flashlight which is about 10 years old and no longer holds a charge. There is only a model number printed on the battery: CY100722 and the input charger operates at 5vDC 200ma Can anyone please help me with establishing the output and capacity of the battery so that I can locate a compatible replacement ? Thank you in advance

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  • \$\begingroup\$ Does the battery look like this? if not, show us a photo of the battery and flashlight. What voltage is the bulb rated for? \$\endgroup\$ Sep 24, 2019 at 20:47
  • \$\begingroup\$ How many cells in battery. 3 x NiCd or 3 x NimH is most likely - but, not certain. \$\endgroup\$
    – Russell McMahon
    Sep 25, 2019 at 1:54

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If this is what you are dealing with

https://radioskot.ru/FOTO35/zamena_svincovykh_akb-1.jpg

enter image description here

Then this page will help you.

The original battery is a 4V 800 mAh lead acid one. Details here and available
4V 800mAh Lead Acid Battery Rechargeable Flashlights Electric Mosquito Trap Battery 32 * 22 * ​​65mm Free Shipping.
BUT replacement with 3 x NimH as per the above webpage is strongly recommended.

https://radioskot.ru/FOTO35/zamena_svincovykh_akb-9.jpg

enter image description here

enter image description here

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  • \$\begingroup\$ Russell thanks to you and to other respondents. You have perfectly identified the battery and a better solution. Interestingly, my model has blanking points for the side lighting shown in your photo. I will now switch to the 3xNimH AAA's. \$\endgroup\$
    – Clive B
    Sep 25, 2019 at 21:45
  • \$\begingroup\$ @CliveB An interesting light. Probably Chinese made, but all the information on it seems to be Russian sourced. Where are you located? \$\endgroup\$
    – Russell McMahon
    Sep 26, 2019 at 7:01

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