3.8 kWh Drop - in LiFePO4 Battery Solution fur VECTRIX Owners?

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Don Harmon
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3.8 kWh Drop - in LiFePO4 Battery Solution fur VECTRIX Owners?

VECTRIX owners looking for a Plug & Play LiFePO4 that can "drop-in" to your scooter please contract don [at] lifebatt.com and give me your battery box dimensions. We just might have a solution for you?

antiscab
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Re: 3.8 kWh Drop - in LiFePO4 Battery Solution fur VECTRIX ...

the dimensions of the battery box are:

230mm wide x 330mm tall x 700mm long

You need a minimum of 40 cells in series for the MC to work properly
A minimum of 42 cells for the charger to not normally require BMS terminated charging

fitting lotsa batteries in that box has as much to do with shape as physical size.

Matt

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst 2 x TC Charger & MC
conversion

Don Harmon
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Re: 3.8 kWh Drop - in LiFePO4 Battery Solution fur VECTRIX ...

The Pack I am referring to measures 191mm wide, 145mm height, and 814mm long (64) P-18 Cells. Total Spec. 52.8V / 72Ah ( 3.8 kWh).

antiscab
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Re: 3.8 kWh Drop - in LiFePO4 Battery Solution fur VECTRIX ...

The Pack I am referring to measures 191mm wide, 145mm height, and 814mm long (64) P-18 Cells. Total Spec. 52.8V / 72Ah ( 3.8 kWh).

That pack is no good for a Vectrix, you need at least a nominal 128V LiFePO4 pack (40 cells)

even two of them wouldn't be enough as the controllers low voltage limit is 108V

3 would be enough, but it wouldn't fit, and the charger won't go to a high enough voltage

Your BMS/VMS - can it disconnect the charger from the mains? (it can't be disconnected from the battery).

Matt

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst 2 x TC Charger & MC
conversion

Don Harmon
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Last seen: 7 years 7 months ago
Joined: Saturday, October 20, 2007 - 17:15
Points: 117
Re: 3.8 kWh Drop - in LiFePO4 Battery Solution fur VECTRIX ...

What are the Motor & Controller Specs. for the Vectrix?

antiscab
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Last seen: 7 months 4 weeks ago
Joined: Saturday, July 7, 2007 - 23:55
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Re: 3.8 kWh Drop - in LiFePO4 Battery Solution fur VECTRIX ...

What are the Motor & Controller Specs. for the Vectrix?

The current limit seems to go up with voltage,
when I was running 44 cells, battery current limit was 240A

Low voltage limit on newest firmware is 108V

on older its more like 102V

The wiring for the motor controller and charger are somewhat integrated, disconnecting the charger from the battery may have some odd consequences like the fuel gauge no longer working

So any emergency disconnect (for when the charger software does lock up) must be on the 240/120vac side.

Matt

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst 2 x TC Charger & MC
conversion

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