stealth bomber

Hey guys, I made a 52V battery out of tested laptop batteries. Battery chargers to 58.8 which is perfect. I have hooked a BMS up which is all connected properly, when it gets to 51V on my handlebar volmeter the LCD display goes off and the voltmeter dies. When I switch it back on it...

Hello, I just want to give a bit of a background I am after a battery that can safely provide 60 amps with as much range as possible this battery will be used for all 3 of my ebikes 1 stealth bomber style 1 electric moped and one BBSHD E-moped being the most important the E-moped draws 45Amps...