Charging problems?
Thread Starter
Drifting
Joined: Apr 2002
Posts: 1,736
Likes: 37
From: Stockton Ca
Engine was off.
I wanted to see if I lost the charge in the Batt.
I will start it up later so I can measure the voltage.
First I have to extend the meter cables.
Do they sell that at the auto parts store?
I would prefer to have a set of longer wires.
I wanted to see if I lost the charge in the Batt.
I will start it up later so I can measure the voltage.
First I have to extend the meter cables.
Do they sell that at the auto parts store?
I would prefer to have a set of longer wires.
Le Mans Master
Joined: May 2003
Posts: 8,874
Likes: 3,551
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
Sounds like you have enough money in the bank ( Battery) and you are making enough income (13.8v) at the battery
a 12 V battery in comprised of (6)~ 2.1 volt cells- which should be about 12.7 fully charged.
If the voltage measured at the battery is higher than the battery when running- it is being charged-
BUT you need to have some things pulling power to get a proper measurement- like turn the headlights on and check again.
So make sure you are charging- then
Check the parasitic draw - otherwise you'll be chasing your tail- I posted the procedure above.
Right now you don't know if its a bad battery or a "leak" - something staying on draining your battery.
Or even possible you have both- too much parasitic draw and a bad battery...
Richard
Melting Slicks
Joined: Jul 2005
Posts: 2,649
Likes: 863
1) Buy a New Meter with a set of longer leads
2) Buy longer Leads for your Current Meter
3) Make a Jumper Lead with a few feet of wire and an alligator clip on each end.
4) Buy a Pack of Butt Connectors *in your case - the red ones) - and a few feet of 18 ga, wire, cut each test lead and splice in a few extra feet of wire. Use the butt connectors to make the connections.
You really need the car to be running, and the battery down a bit, to get anything useful out of the this diagnostic test. If there is a connection with some degree of resistance - the voltage drop will be proportional to the amount of current flowing.
Burning Brakes
Joined: Dec 2005
Posts: 1,153
Likes: 341
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