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452909 [HK] 香港求购USB电池(USB battery pack)

 
 
I'm interested in your 3400mAh Universal USB battery pack for cell phone.
Please let me know if you have this kind of battery.
I need universal lithium ion battery pack, the battery must be permanently connected to the wall (220 V) and the output to a 12V 2A machine.
When the wall power fails, the battery has to maintain the power for at least 4 hours.
If you have, please send me your detailed specification and quote me the best price.
Post date 8-20, value member points ?

 

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