Uniross 210 HYB 9V BP Rechargeable Batteries (Pack of 1) : Amazon.in: Electronics
Synergy Digital Dog Collar Battery, Works with Dogtra 35AAAH3BMX Dog Collar, (Ni-MH, 3.6V, 210 mAh) Ultra Hi-Capacity, Compatible with Dogtra BP20R Battery - Walmart.com