2X 10.8V 4.0AH Battery For Bosch 12V GBA 1600Z0002Y GSR GSA BAT420 1607A3506F | eBay
6X 10.8V 4.0AH Battery For Bosch 12V GBA 1600Z0002Y GSR GSA BAT410 2607336014 | eBay
Amazon.com: Compatible with Bosch 12 Volt Lithium ion Battery 4.0Ah 4000mAh Suitable for 12V Li-ion Electrical Tools Replaceable Batteries : Tools & Home Improvement