Recent Topics
Weapon Shield
by Ws6
02/11/16 12:33 AM
Amsoil Euro 5W-40 92Benz 190E 2.3L 8V 3889 miles
by IllinoisSparky
02/10/16 09:11 PM
Which oil?
by SEMI_287
02/10/16 09:05 PM
Fluid change on my 2015 Accord
by dan_erickson
02/10/16 08:56 PM
Upgrading brakes
by ram_man
02/10/16 08:49 PM
Rear end sounds like an airplane
by mclasser
02/10/16 07:49 PM
GDI engine's and motor oils
by gabriel9766
02/10/16 07:42 PM
Old toyota Need shocks?
by ceast
02/10/16 07:27 PM
How to do a clean install
by Oldmoparguy1
02/10/16 07:21 PM
Troy Bilt Pony
by OSUFan86
02/10/16 06:43 PM
$1.33 for a GALLON of 87!
by Vern_in_IL
02/10/16 06:30 PM
Eating out, beware you all
by CourierDriver
02/10/16 06:13 PM
Newest Members
BlueKelah, threeeightteen, TOADchunks, Longo9596, Roadrunner77z
56889 Registered Users
Who's Online
27 registered (bmod305, bbhero, B320i, BlueKelah, 3 invisible), 536 Guests and 194 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
56889 Members
66 Forums
244531 Topics
3982467 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3228211 - 12/26/13 11:48 AM Battery Charger QUESTION?
Norm Olt Offline


Registered: 01/27/03
Posts: 1829
Loc: Pac NW
The meter on my 10amp (Schumacher) charger is out: when charger's clips are connected to a 12 volt battery that's a little low, what should the voltage reading be between the two battery terminals?

I don't think I can read actual amps output with the test device I have without opening up the charger itself, but the voltage reading I'm now getting hooked up as above is about 16 volts. Needless to say I don't have the battery cables hooked up.

Does it appear I'm actually charging the battery to you guys?

Thanks in advance!
_________________________
14Outback 10K
01ValkyrieIS 6K
93ZX11D 30K
87F250 185K
88420SEL 178K
88420SEL 212K (parts)
91420SEL 235K
92SVX 182K
00Nighthawk250 1.5K
93SC400 105K
85F150 104K

Top
#3228217 - 12/26/13 11:53 AM Re: Battery Charger QUESTION? [Re: Norm Olt]
Eddie Offline


Registered: 12/07/03
Posts: 7844
Loc: Florida, Cape Coral
Yes, you should be charging.
_________________________
CX5 Touring 2.5L :-)

Top
#3228221 - 12/26/13 11:59 AM Re: Battery Charger QUESTION? [Re: Norm Olt]
bullwinkle Offline


Registered: 10/09/04
Posts: 5308
Loc: Cincinnati, OH, USA
Normal fully charged battery is 12.6, so anything above that is charging. 16 VDC is a little on the high side, I wouldn't leave that hooked up for more than 24 hours, preferably less, check your electrolyte (water) level when you're done.
_________________________
06 Ram 3500 CTD 4X4 48RE SRW, 93 GMC C3500 6.2 diesel, 89 F-450 7.3 IDI, 98 Cherokee 4.0, 05 Scion xB, 15 Transit 250 3.7

Top
#3228229 - 12/26/13 12:09 PM Re: Battery Charger QUESTION? [Re: Norm Olt]
Norm Olt Offline


Registered: 01/27/03
Posts: 1829
Loc: Pac NW
Thanks (again) for the most prompt replies! I'll keep a close watch, but once the battery consistantly reads 12.6 volts I'll hook up my battery cables and give it a go. Probably oldest battery I have (age unknown) and the F150 sits outside. It has been pretty cold around here all December, so a low battery is not to be really unexpected. I usually go out and start it and dive around at least once a week.

I'm almost ready to open this charger up and see if it is just a loose connection to the ampmeter internally, but as long as it is charging I'm happy. This is my spare charger (and the one @ the Beach) and I have plenty of Battery Tenders for maintenance.

Cheers!
_________________________
14Outback 10K
01ValkyrieIS 6K
93ZX11D 30K
87F250 185K
88420SEL 178K
88420SEL 212K (parts)
91420SEL 235K
92SVX 182K
00Nighthawk250 1.5K
93SC400 105K
85F150 104K

Top
#3228234 - 12/26/13 12:17 PM Re: Battery Charger QUESTION? [Re: Norm Olt]
Rand Offline


Registered: 08/20/03
Posts: 9801
Loc: NE,Ohio
fully charged battery fresh off the charger will usually read about 13.2-13.3

after sitting for half an hour usually 12.6~~

thats a regular charger not "float/tender"
_________________________
2015 Forester I-Premium 6MT

Top
#3228290 - 12/26/13 12:53 PM Re: Battery Charger QUESTION? [Re: Norm Olt]
Donald Offline


Registered: 03/21/04
Posts: 16073
Loc: Upstate NY
Is the meter analog or digital? I would suspect the charger would fail before the meter if its analog unless you dropped the charger.

Leave the charger on overnight and see how it is in the morning. Voltage is not a great way to test a battery unless you wait 24 hours for the surface charge to go away and have a high quality meter.

A carbon pile load test or conductive test are better and can be done immediately after charging. The conductive can be done with a battery even if its not fully charged.

Some of the fancy Schumnacher "speed chargers" go through a couple of phases of battery charging so the voltage may change as the phases change.


Edited by Donald (12/26/13 12:54 PM)
_________________________
2015 Subaru Forester 2.5 engine/CVT PP & M1
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1


Top
#3228320 - 12/26/13 01:29 PM Re: Battery Charger QUESTION? [Re: Norm Olt]
dernp Offline


Registered: 10/18/12
Posts: 504
Loc: S/W Ontario, Estero, Fla.
I bought a Schumacher SC1200A for about $35 on Amazon. Pretty good price I thought for a micro processor controlled charger. May not be worth fixing a broken one.
_________________________
2014 Honda Civic 1.8 28k TGMO 0w20
2013 Honda CR-V 2.4 AWD 48k TGMO 0w20
2012 Elantra 61k PPPP 5w20
2011 Tundra 5.7L 48K PP 5w20



Top
#3228463 - 12/26/13 04:19 PM Re: Battery Charger QUESTION? [Re: Norm Olt]
Chris142 Offline


Registered: 06/05/03
Posts: 13493
Loc: apple valley, ca
Put a volt meter on the battery to see what the actual voltage is
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

Top
#3228483 - 12/26/13 04:50 PM Re: Battery Charger QUESTION? [Re: Norm Olt]
Dufus2 Offline


Registered: 12/12/13
Posts: 252
Loc: Virginia
My 6A/2A charger from walmart is a SE-82-6 re-branded to WM-82-6 and has an amp meter. It can read zero if the battery is totally dead. It normally reads in the 2-3 amp range once the battery is up in a good state of charge. If it hums when connected, its working.

A battery charger can put out 18V and boil a battery if its left on for a long time. Anything above 13V will charge the battery unless it is bad with a surface charge or sulfated.
_________________________
ASE Certified in Med/Heavy Truck Service including A9
Heavy Equipment Repair, Fleet Maintenance
Real Cars Rattle and Smoke a Little

Top
#3231811 - 12/30/13 11:39 AM Re: Battery Charger QUESTION? [Re: Norm Olt]
Norm Olt Offline


Registered: 01/27/03
Posts: 1829
Loc: Pac NW
My old Schumacher is an old analog 12v-6v 2/6amp and works great. The one at the Beach came from my neighbor and it has a three-way selector for "Manual", "Maintenance-Free Automatic" and "Deep Cycle": this is the one with the ampmeter question.

Thanks, again to all! & CHEERS!

p.s. The battery fully charged in about 12 hours on manual, good voltage reading the following morning. BatteryTender Jr. then ran for 10 seconds and read "green" (NOT RED, GREEN ).

Then I got serious and rebuilt/cleaned the cable attachments, including baking soda soaks and stripping away the paint (!) on the terminal attachments. Why new ones would have much of the surfaces covered with red/black enamel is way beyound me.
_________________________
14Outback 10K
01ValkyrieIS 6K
93ZX11D 30K
87F250 185K
88420SEL 178K
88420SEL 212K (parts)
91420SEL 235K
92SVX 182K
00Nighthawk250 1.5K
93SC400 105K
85F150 104K

Top