Here's why you don't use lead acid batteries

Kellyn

Forum Administrator
Staff member
I received my Delica Chamonix with dual batteries. At the time I didn't think anything about the type of batteries that were in there until a few days ago I started to get a slow crank. I looked over the terminals and discovered first that the negative terminals were loose. I then noticed that the various harness connectors running over the battery closest to the driver's side (Jappo driver's side) were not in the best of shape. I attempted to seperate the connectors and they literally exploded. Apparently, the lead acid batteries were off gassing and the resulting gas murdered every harness connector and wire in the immediate vicinity. As a mechanic for most of my life, I've known about the potential dangers of off gassing but have never seen it affect wires so aggressively. I assume this is because of the compact compartment of the L300, which doesn't allow for much airflow. Regarding the repair, I used 12 Gauge GM Weatherpak 2-Wire connectors to rebuilt the harness connetors that were melted. I happen to have the proper crimping tool for terminal ends so this process is very easy for me. After the repair of the harness, I installed a fresh set of AGM batteries from NAPA. The size is a Group 34. I even installed the battery hold down that had been under the rear seat for 4 months! I recommend to anyone who works with wiring, whether it's installing aftermarket accessories or just rebuuilding harness connectors to own of these crimp tools. I bought mine from Mac tools for $80. They allow you to crimp multiple styles of harness connectors and also do insulated wire connectors like the yellow, red, and blue ones found in those kits.

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Did you have to ajustment the charging system level voltage to compensate for the different charging requirements of AGM vs Lead Acid?
 
Hi,

I also have a Delica Chamonix with dual batteries and I'm looking at replacing the batteries.

It looks like the current batteries are 10" long, 8" high and ~6.75 wide - so I think the Optima YellowTop D35 will fit.
But the ones I currently have say: MF80D26R - 12V 52ah - and that Yellowtop D35 is 48ah 620Amp
Is that going to work ok? Or should I try for the YellowTop D34 with 55ah 750amp - which is a little wider, but might fit.

I was reading on another forum the batteries should be at least 600amps - so then the D35 should be fine...
arggg...

Thanks for any advice!
 
Hi @paul3d did you end up getting the D35's? How did it go for you? Are they working well?

I'm thinking about getting some myself but I'm also thinking about getting a wet battery that I can maintain instead and hopefully get a bit longer life out of it.
 
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