Testing the C14410-HPS Battery Pack

So far I have only discharged and re-charged my test C14410-HPS battery once. I'm still in the process of building a fairly simple protection circuit that will open a 200A contactor should either of the over / under voltage TTL outputs trigger, once this is finished I will do more detailed testing. 

The single test that I've done so far was to remove five of the six lead-acid batteries from the front of the e-e and temporarily strap the C14410_HPS in their place, running the whole car off just the ONE battery! I wound down the current limiter on the Curtis controller to minimise and potential over-current draw then I drove several times around our neighborhood block (0.5km circuit). This run finishes with a very steep incline over about 200m, the following graph shows the last of the slow (so not to push the current draw above 120A) 50 second runs up that incline.

Some points to note;

• It's very hard to maintain constant current with a foot-throttle!
• This battery can put out about 15kW (20HP) continously.
• You can't react quick enough to the warning buzzer to avoid over-discharging during high current draws (kinda obvious).

This graph shows the Volts and Ampheres of the last of several runs up a very steep 200m incline. As you can see I slightly over-discharged the battery and the OLV LED was triggered, also all of the VMS's recorded an under Voltage event, which means at least one cell monitored by each VMS went below 2.2 Volts.