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18350 rechargeable battery 3.7V 850mah
Li-ion 18350 High Top 3.7V 850mAh Rechargeable Battery with Ce, Un38.3, MSDS Certificates - China Rechargeable Battery and 850mAh Battery price | Made-in-China.com
New Manker 18350 (1100mAh) 3.7V (15A) Button Top Rechargeable Battery | eBay