150mAh LiPo Rechargeable Battery With Borad Power For 3.5 Mm Mini Speaker, MP3s, Bluetooth Devices, Headphones, And Headset 3.7V From Ehaotrade, $1.71 | DHgate.Com
Amazon.com: Long Lasting 3.7V 150mAh Lipo Rechargeable Battery Over Charge Protections Compact and Lightweight Battery Pack Battery with Over Discharge Protections : Health & Household
3.7V 150mAh 402025 Lipo Battery Rechargeable Lithium Polymer ion Batt