Womp womp. I left the bike in "P" for a couple of days and came back to a dead battery. Any chance I can revive it with a tender? The lead-acid battery is new this season. I am using a Stanley BC209 - 1.5 amps.

Thanks.

You're gonna need a proper battery charger to bring the battery back from such a low state.

There are folks here that claim there is a way (or maybe it's another site) where you have a separate battery that has a charge and you connect them in series (I think).  My guess is that when the charger sees a dead battery it does not even try to charge it, so the extra battery connected to it makes it see some of a charge and says "hey, I need to charge this low (not dead) battery".

Hang tight and let some of the other folks chime in and see if they have any insight into this theory.

I am not en electrical expert nor have I done this, but seems I recall something to this effect being a possible solution.

stewmills wrote on 06/24/15 at 11:55:26:


I don't think the tender sees a dead battery and refuses to charge it, I think it simply doesn't see it, since it detects voltage
connecting it in series will make the tender work
weather the battery will come back depends on how resistant it is to damage from discharge
I'd try it, before shelling for a new battery

Leaving it dead,well, that will kill it. Battery life is strange, some crap out in weeks, some outlast a pet. I've left the key on on the backhoe twice, sucked that battery about flat, yet, it lives. Essential tools, in life, tires need air. How anyone lives without a compressor is beyond me. Batteries need maintenance, voltmeter, charger,,
http://www.oreillyauto.com/site/c/detail/SS01/01397/N0366.oap?ck=Search_N0366...

Test specific gravity,
Antifreeze checker ... pressure gauges. Survival takes tools.
There was no forum, nobody to ask, and the guy at the parts store told me to knock a hole in the hood, drop a chain through and chain it shut.
BUUUuut, my heart couldn't allow me to not work on stuff. Before I learnt how to figure it out, I probably replaced battery, alternator and voltage regulator on a few cars, when all I really needed was one,
Now, pull into a store, they plug in,  sheesh.  
Kitchens need tools, knives, cuting board, stuff.
Cars, bikes, heck, ya just gotta have some stuff.

Hell, I did, too, don't feel bad

Remember? now you're asking a lot  
I think I've been senile all my life  

justin_o_guy2 wrote on 06/27/15 at 17:04:29:


i was taking that ginko biloba stuff for memory, but kept forgetting to take it.