INVENTO 1Pcs 11.1V - 12V 1000mAh 55x65x18mm Lithium ion Li-ion 3.7V x 3 Cell Rechargeable Battery Pack with Charging Port for DIY : Amazon.in: Electronics
25A 3-Cells Lithium-Ion Battery Charger with Protection – HandsOn Tech
SII Semiconductor Corporation Introduces a New 2-to-3-Cell Secondary Battery Protection IC for Rechargeable Li-ion Batteries Utilizing an Ultra-small Package | Seiko Instruments Inc.