Traction battery discharge current

The hybrid battery should be fine. Just do the next charging cycle with the grid charger.

 

Happens to all of us sooner or later... Fortunately with light bulbs the amount of resistance and amp drain is based on the temperature of the filaments in the bulbs.

I even once accidentally drained a Honda Hybrid pack down to zero volts on stage one, but because the filaments in the light bulbs were not lighting up and running cold it meant that amp load on the drained pack was very low and soon as I realize what happened I put it back on the high voltage trickle charger and voltage went back up super fast in the pack and no long term damage was done.

 

It would be even more fortunate if a light bulb's dependence of resistance on filament temperature went the other way.

Inconveniently, the coefficient is positive: the filament resistance rises (by a lot) as the temperature goes up toward the light-emitting range. When cold, it has a very low resistance and will pass more current than you expect, not less.

That's a useful thing about light bulbs if you want to build a dim-bulb tester for working on vintage hi-fi gear, but it doesn't end up helping you in a battery-discharge application.

 

Right, that's why I used the words "will pass more current than you expect".

As your battery voltage decreases, if the load resistance were constant, you would expect the current to drop by the same proportion. With a light bulb, the current will drop, but not by that much, so it'll end up passing more current than you'd expect for a simple ohmic load.

It'll end up passing exactly the current you expect, if you're already using a lightbulb I-V curve to come up with what you expect.