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I have a raw (unprotected) 3.7v LiPo cell. It's rated 4000mAh. It has the markings "HRDC 14.8wh 3.7V 606090P 20170528". Apparently 606090 is a number commonly associated with this type of battery, but I can't find a datasheet. What's a safe discharge rate?

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  • \$\begingroup\$ Does “unprotected” mean no current or thermal sensors / control? If it does the 0mA may be sensible.... \$\endgroup\$ – Solar Mike Feb 10 '18 at 22:51
  • \$\begingroup\$ @SolarMike Unprotected means all the protection is based on me keeping a close eye on current and voltage with some meters. :) \$\endgroup\$ – Daffy Feb 10 '18 at 23:01
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    \$\begingroup\$ Take care with it then . \$\endgroup\$ – Solar Mike Feb 10 '18 at 23:02
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I found some data here:

http://www.globalmarket.com/product-info/606090-lithium-polymer-battery-3-7v-400mah-for-smart-watch-10924302.html

strangely the item listed there is not a 606090, but a smaller 592627 but the C ratio will be the same.

this may not be your exact cell but should be representative.

0.5C continuous, 1C peak

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You should use a battery that has a current rating "C" that is rated for your load current. It sounds like you found a battery in a dumpster and are looking for a load for it to drive. If you use it in a Vape'r using a very high current then it might explode in your face or catch on fire.

Some of my RC model airplane Li-PO batteries are rated up to 70C and the weak ones are good for at least 20C.

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  • \$\begingroup\$ You're right about the battery being salvaged, but I don't intend to power any heavy loads with it. I'm using it for a load drawing 2 amps max (0.5C). \$\endgroup\$ – Daffy Feb 11 '18 at 1:28

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