DC 3.7V 320mAh 621733 Rechargeable Lithium Battery for Sony WF-C500,WF-XB700，WF-H800，WF-SP800N，WF-1000XM4 Headphone case and WH-CH500,WH-CH510 Headphone Battery Replacement

Compatible with SONY WF-C500、WF-XB700、WF-H800、WF-SP800N、WF-1000XM4 Headphone Warehouse and WH-CH500、WH-CH510 Headphone battery replacement。It can also be used in other 3.7-5V electronic products with power less than 1.184Wh (320mAh).（★ Not applicable to high-power electric tools and model aircraft）
Please carefully compare the polarity of the connector before use,★the red wire is the positive "+" and the black wire is the negative "-"，Do not reverse-charge or reverse-connectreverse. ★The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire.
621733 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 320mAh, power 1.184Wh, ★size 33×17×6.2mm(1.3×0.67×0.244inch）(L*W*T), Weight:6.5g(0.23oz)，Maximum current:0.3A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit.
It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3302-26 high temperature resistant silicone cable, and genuine JST Pitch 1.25mm ★2 wire connector module.
If there is any quality problem within one year, ★please contact us by email at any time and replace it free of charge.

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