Synergy Digital Power Tool Battery, Compatible with Bosch PSR 18 LI-2 Power Tool, (Li-ion, 18V, 4000mAh) Ultra High Capacity, Replacement for Bosch 1 600 A00 DD7, 1 600 Z00 000, 1600A00DD7 Battery - Walmart.com
Battery for Bosch PSR 18 LI-2, PSB 18 LI-2, PSB 18 LI-2H, PSM 18 LI, PST18LI | eBay