I just bought a used generator (excellent shape) with elec. start.
What I'd like to know is ...is it necessary to disconnect either of
the cables to the battery to charge it with a trickle charger?
Thank you for advice and information.
You didn't ask, but I see warnings about the hydrogen gas that's
created when a battery is charged. Especially if it run down and
needs a lot of charging and especially if it is in a closed in space.
And the warnings are about sparks from the charger when the charger is
connected or disconnected. It helps to turn off the charger when
Despite my posting, AFAIK it's incredibly rarre for a fire to start,
or an explosion, from this hydrogen gas, but people here or googling
can tell us more.
I certainly don't worry about it.
I've seen batteries explode. It's pretty spectacular. Pieces of case
20 ft away. Never seen any injuries other than a little acid burns
and ruined clothes. Typically from people disconnecting the charger
while it was still on. I avert my face when disconnecting or
connecting the last lead. It's more likely to happen inside a garage
or other enclosed space than outside. Hydrogen is pretty light and
given a chance it goes away quickly.
So, inside a garage, the hygrogen filled up the whole place? Must
been one hell of an explosion.
For the OP, I've yet to see a starting battery that couldn't be
charged with a slow charger
while still connected to the engine without doing damage. People
battery tenders hooked up to all kinds of engines in everything from
cars to generators
without disconnecting the batteries. That's what I would use to keep
I've never seen a battery explode that had the caps on. For some reason,
possibly due to an old mechanics tale, many folks will remove the caps
when a battery is charging. The idiot who uses a cigarette lighter to
see down into the battery to check the electrolyte level is the usually
the victim/cause of a battery explosion. :-)
On Fri, 07 Jan 2011 08:37:40 -0600, The Daring Dufas
My wife maintains about 80 golf carts at the country club she manages.
They have had a few battery explosions. The caps were always on and it
was always caused by something sparking while they were on the
On 1/7/2011 9:49 AM, firstname.lastname@example.org wrote:
That's a little different situation than a single battery. I imagine
that a little ventilation could prevent a high concentration of hydrogen
from occurring. The real expert on lead acid batteries is
Ma Bell because the phone company uses more lead acid batteries than
anyone else. Well, there are the U-boats...... :-)
On 1/8/2011 11:20 AM, email@example.com wrote:
Are you talking about an electric golf cart with a bank of about 6
batteries or a gas or propane one with one battery to start the engine?
If it's an electric cart, are you saying 18 to 20 amps into each battery
or to the whole bank of batteries?
On 1/8/2011 2:49 PM, firstname.lastname@example.org wrote:
OK, that makes sense. And yes if the charger shows 18 amps, that's 18
amps at each battery. I was thinking they were parallel, that would
need a lot more current. I never worked on a golf cart, mostly just
curious. Now I know a little bit about them.
My friend manages a ministorage. Her golf cart is gasoline, but the
other location, a couple hundred yards down the road, has an electric
one. I finally got to see how they vary. They're just like you guys
Years ago a friend of mine had a gasoline golf cart just for riding
around their property. They told me to take it for a ride so I got in
and looked. And I looked and looked and asked them how to start it.
They all (their was a party going on) told me to step on the gas. I
said "I see the gas pedal but where do I start it?" Back and forth a
couple times until I finally stepped on the gas, the motor started and I
was cruising. I also found out that many of them run the engine the
opposite way for reverse. Weird little machines.
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