1983 BMW K100 Lithium Iron Phosphate Battery Replacement YTX30L-BS LiFePO4 For Motorcyle – PowerTex Batteries
Antigravity Re-start Lithium-Ion 880 Battery for BMW K100 86 | eBay
Yuasa 53030 (Y60-N30L-A) Dry Motorcycle Battery 12 V 30 Ah Dimensions: 187 x 130 x 170 mm Compatible with BMW K100, K100RS, RT 1000 : Amazon.com.be: Automotive
BMW Service - Battery - K100RS 16 valve model - YouTube