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  1. mrkelkel

    Splicing in an identical battery with only power wires (+ve & -ve), no BMS connection. Thoughts?

    Was sick of driving the car for short trips (<5km), and it just so happened that Ninebot had slashed prices on one of their China-road-legal scooters. 1890 yuan (265 USD) later, this arrived: Rides great (even with no front suspension) and does 35 km/h (22 mph) on flat ground, but range is...
  2. mrkelkel

    300km/190mi Electric Moped on the Cheap

    I got this e-moped last year as a village runabout for my dad, as his ride was getting a little long in the tooth. It's a Segway-Ninebot N90C, which had a list price of about 5500RMB (860 USD). It came with a 72V 35Ah SLA pack, with an advertised range of 150km. That figure was of course BS...
  3. mrkelkel

    Using 20-cell Li-ion pack and 24-cell LiFePo4 pack in parallel. Feasible?

    Hi there. Long time reader, first time poster. I intend to connect and use a 20-cell Li-ion pack and a 24-cell LiFePo4 pack in parallel. I've got a 24-cell LiFePo4 battery pack rated for 76.8V, 56Ah as the main pack in my electric moped. Recently I assembled a 20-cell Li-ion pack from some...
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