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Instrumentation

How to Size the 12V Battery for an Electric Car?

Posted on:
Saturday, May 25th, 2013
Author:
Ken

I just recently had to replace the 12V auxiliary battery in the electric MR2 after almost 2 years of driving. The 12V battery on converted electric cars, serve mostly the same purpose as the 12V battery in a gas car. It powers: cabin lights headlights instrumentation such as the “fuel” gauge ignition circuit that starts [...]

Posted in 12V Battery, Instrumentation, Parking | 10 Comments »

Should you install a Battery Management System to protect those expensive Lithium batteries?

Posted on:
Wednesday, May 15th, 2013
Author:
Ken

  The 45 cell LiFePO4 battery pack in my electric MR2 costs $10,500. A Battery Management System (BMS) can easily cost another $1200. If you are considering a set of Lithium batteries for your conversion, should you invest in a BMS to protect your batteries or not? I chose not to, and it has served [...]

Posted in Batteries, BMS, Cell log 8, Charger, Instrumentation, MR2EV | 11 Comments »

EV is back on the road with new improvements

Posted on:
Friday, April 6th, 2012
Author:
Ken

It took about 2 weekends to repair the damages caused by the CV drive shaft coming loose. I had to first take all the batteries in the rear compartment out. Then take the motor and transmission assembly out so that I can clean the oil out of the damaged section on the transmission for welding [...]

Posted in Controller, DriveTrain, Instrumentation, MR2EV, Reliability, Tachometer, Transmission | No Comments »

EV display and Lighted Ammeter

Posted on:
Saturday, December 17th, 2011
Author:
Ken

Now that it’s getting dark early, my ammeter display has not been visible on the drive home from work. Also the original dash lights were also not working, so reading the dashboard was difficult. I purchased some LED bulbs from autolumination.com and now I have a lighted dash and light ammeter. I also replaced the [...]

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Posted in Batteries, Instrumentation, MR2EV, Range | No Comments »

Pictures

Posted on:
Monday, July 4th, 2011
Author:
Ken

Here are some pictures… EV gauges Charger Located in front. The Manzanita Micro Charger lets me charge anywhere up to 240V and 30amps. Control Boards located in the motor bay behind passenger and driver seats 17 Batteries up front 22 Batteries in the rear Cheap Battery monitor system Be safe! New Suspension System Look ma, [...]

Posted in Batteries, Charger, DriveTrain, Instrumentation, Motor, MR2EV | 2 Comments »