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RedDevil · 08-29-2015, 09:05 AM

Got the lid off the IMA battery again, to check on the terminals and see if my connectors would fit.

Hooked it up with my Fluke, flipped the switch, keyed on and there it is.
Mind the red wire is on the negative pole. Hence the minus in the display

I can only mount the (flat) connectors by bending them. The terminals are surrounded by plastic edges.
I hoped there would be enough clearance to slide them in under that plastic from the left towards the right (stepped up) terminals, but there isn't.
Ah well, the bent connector does fit.

The voltage was a bit of a surprise, as I have not seen it above 108 Volt before. But I feel reassured about using a 117 Volt buddy pack, if 111 Volt is within the normal operating range then the remaining 6 Volt difference won't kill it.
The total internal resistance of all cells and BMSes is about 0.8 Ohm; hooking the pack up will not see a crazy surge.
I'm glad I went for 12Ah cells instead of 10Ah, but now I wonder if I should have used even bigger cells for lower internal resistance.
Time will tell, I guess.

I still do need 2 x 1 meter of additional cable to my switch and fuse etc. box (car-side buddy pack terminal), and that switch.

08-29-2015, 09:05 AM	#37 (permalink)
RedDevil Master EcoWalker Join Date: Dec 2012 Location: Nieuwegein, the Netherlands Posts: 3,999 Red Devil - '11 Honda Insight Elegance Team Honda 90 day: 53.95 mpg (US) Thanks: 1,714 Thanked 2,247 Times in 1,455 Posts	Got the lid off the IMA battery again, to check on the terminals and see if my connectors would fit. Hooked it up with my Fluke, flipped the switch, keyed on and there it is. Mind the red wire is on the negative pole. Hence the minus in the display I can only mount the (flat) connectors by bending them. The terminals are surrounded by plastic edges. I hoped there would be enough clearance to slide them in under that plastic from the left towards the right (stepped up) terminals, but there isn't. Ah well, the bent connector does fit. The voltage was a bit of a surprise, as I have not seen it above 108 Volt before. But I feel reassured about using a 117 Volt buddy pack, if 111 Volt is within the normal operating range then the remaining 6 Volt difference won't kill it. The total internal resistance of all cells and BMSes is about 0.8 Ohm; hooking the pack up will not see a crazy surge. I'm glad I went for 12Ah cells instead of 10Ah, but now I wonder if I should have used even bigger cells for lower internal resistance. Time will tell, I guess. I still do need 2 x 1 meter of additional cable to my switch and fuse etc. box (car-side buddy pack terminal), and that switch. __________________ 2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut. lifetime FE over 0.2 Gmeter or 0.13 Mmile. For confirmation go to people just like you. For education go to people unlike yourself.