Bafang display Compatibility .... new install

reino14

New Member
Region
USA
We've just installed a new 48v BBSO2B kit hoping to use a newer TransXPST battery (48v) from an older Raleigh. We used just the red/black leads from the battery (2 others not used) to the red/black motor leads. The display, 850C, illuminates for 5 seconds and shuts off. Battery voltage is 52.9 momentarily, then drops to 36v. Anyone know if this is an incomparable hook-up, or is there a workaround?

Any explanations would be helpful .... Thanks, Reino
 
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