1971 BMW R50/5 Motorcycle Batteries
Even though 1971 still did not see a stock electronic ignition on the R50/5, because of the amount of conversions to electric start, we are listing the most common battery that would be used. Different people may have put different sized batteries in customized trays, but the most common battery boxes and batteries for BMW’s at the time were the probable choice, and are what is listed here. Please measure your battery or battery box before buying one of the batteries listed here.
Price: $78.95
Size: 7 1/8 x 3 x 6 9/16"C.C.A.: 255 Amp/Hr: 20
Replaces: Standard flooded type 51913, 51814, YTX22L-BS
Price: $211.00
Size: 7 1/8 x 3 1/16 x 6 11/16"C.C.A.: 552 - As tested Midtronics model #417755 Amp/Hr: *See Notes
![LFX18L1-BS12 Shorai 12v 18 AH PBEq LiFePO4 Power Sports Battery [- +]](https://res.cloudinary.com/dyuctplmh/image/upload/w_80,h_80/product-source/514x_LFX18L1-BS12_Shorai_LiFePO4_Lithium_Motorcycle_Battery.jpg)
Price: $170.95
Size: 5.83 x 2.60 x 4.13"C.C.A.: 270 Amp/Hr: 18 PbEq
Replaces: YTX16BL, YB16AL-A2, YTX20HL, YT51913-22
Price: $131.39
Size: 7.27 x 3.12 x 6.67"C.C.A.: 170 Amp/Hr: 18
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