Menu

Charging the battery -- how long is okay?

Search this Thread

Prev

Previous Post

Next Post

Next

#36

Report Post

posted to rec.boats

Vic Smith

Vic Smith is offline

external usenet poster

First recorded activity by BoatBanter: Oct 2006

Posts: 4,310

Default

Gene: Battery Clips?

On Mon, 25 May 2009 12:07:19 -0400, wrote:

On Mon, 25 May 2009 05:47:40 -0400, "D.Duck" wrote:

10 feet of 12ga stranded copper will drop 0.59v at 15a.

When that is deducted from 120v it is fairly insignificant but it is
4.9% of your 12 volts.

Based on a 12AWG stranded wire resistance of 0.00159 ohms per foot, the
voltage drop would be 0.225 volts.

There maybe a few more 10ths volt drop depending on the integrity of the
clamp's connection to the battery.

You have to get back so double that ;-)

I used a calculator based on the table in the NEC. I know the AARL
table shows lower resistance. It has to do with the temperature.

Having done more jumps than I care to remember, all I know is pay for
the heaviest jumper cables you can find. Make sure the side-mount
clips are spring-tensioned and not the slide-on type.
But I don't get why anybody would care about charger clips.
Even the lightest, cheapest feeling clips have always worked fine for
me.
In fact, that's what's on my Sears charger, maybe a 50 buck model with
2 and 10 amp modes and a "start" mode.
I've started 2 cars with virtually dead batteries using that "start"
mode and those cheap clips. No problem at all.
Charges fine on the 2-amp mode with those cheap clips too.
Never used the 10-amp.
Supposed to be automatic, but I've always unplugged it after a day
charging a depleted car battery. Don't like that humming.

--Vic

Reply With Quote

Reply With Quote

Thread Tools	Search this Thread
Show Printable Version	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Posting Rules
Smilies are On [IMG] code is Off HTML code is Off Trackbacks are On Pingbacks are On Refbacks are On

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Long sidtance battery charging	Hobbs	Cruising	11	October 24th 06 09:18 PM
Battery charging	John W. Bienko	ASA	29	June 5th 06 10:26 PM
Battery charging	Thom Stewart	ASA	0	June 4th 06 04:41 AM
Battery charging, have I got this right?	Stephen Trapani	Cruising	10	March 26th 06 08:41 AM
Battery charging	Michael Remski	General	11	October 11th 03 01:11 AM

All times are GMT +1. The time now is 10:24 PM.

About Us

"It's about Boats"

Contact Us BoatBanter Home Privacy Statement

Copyright © 2017