Forum Discussion

Dirtdaddy's avatar
Dirtdaddy
Explorer
Jul 18, 2023

Diodes between (-) terminals on parallel batteries. Why?

I’m not sure I understand the stock parallel battery configuration on the wiring in my 2001 Lance 2185 travel trailer. I would think that two standard lead acid 12 Volt batteries would be wired in par...
stevenal's avatar
stevenal
Nomad II
Jul 19, 2023
wa8yxm wrote:
Not only would it prevent a stronger battery from charging a weaker battery
It would prevent the converter from doing so as well.. No valid reason for doing that.


I would expect the converter negative lead to be between the two diodes. The voltage drop across the diodes will prevent the converter from fully charging the batteries, though, unless the converter has been adjusted to a higher voltage.

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