DHRUV-PRO 3.7v 2800mAh Li-Ion 18650 Rechargeable with wire For Electronic instruments Battery - DHRUV-PRO : Flipkart.com
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Amazon.co.jp: EEMB Lithium Polymer Battery 3.7V 1450mAh 524558 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase : Electronics