69800 wrote:yes this was open circuit and the specific gravity was checked with an MISCO 7064VP Refractometer. There is no question about the condition of this battery. Battery was a 72 degrees but drifted down to about 60 by the end of the day in the road tests. My Snap-on Load bank shows a fail.
Thanks for the add'l info. Sounds like you've got a battery on the way out.
69800 wrote: The leaf simply does not keep its 12v battery charged.
..."the" Leaf, "that" Leaf, a "select few" Leafs, or "all" Leafs?
It might be worthwhile to have the DC-DC checked/replaced (not just have the car checked for error codes, but to have the DC-DC actually tested and probably replaced. Otherwise the next battery will have a short life as well. (Yes, I realize you're talking about adding a charger, but treating the symptom should not be necessary if the root-cause is fixed.)