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Open Roads Forum  >  Tech Issues

 > Picking up batteries. What do I look for before accepting?

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HiTech

Texas

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Posted: 01/24/13 06:27am Link  |  Print  |  Notify Moderator

With luck I will get my two AGM group 27 marine batteries on the way to a conference this morning. Anything I should look for to decide not to buy them, such as terminal voltage below a certain level?

Jim

pianotuna

Regina, SK, Canada

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Posted: 01/24/13 07:06am Link  |  Print  |  Notify Moderator

Hi Jim,

Identical recent date codes would be good.


Regards, Don
Full Time in a Kustom Koach Class C 28'5", 256 watts Unisolar, 875 amp hours in two battery banks 12 volt batteries, Magnum 3000 watt PSW inverter.

MNtundraRet

Bloomington, MN

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Posted: 01/24/13 07:06am Link  |  Print  |  Notify Moderator

Best places will add acid to lead/acid batteries when sold and charge them before you pick them up. Take your multimeter, or use theirs, the check battery voltage.

I would ask if the batteries were done this way. If not, how long did they sit on the shelf, and how will charged. Put them on a charger for a low current charge to 100%soc. Check voltage for a number of days to confirm voltage stays at 12.7 volts.

As mentioned by Don in past posts, it is possible a number of use charge cycles mat be needed to reach the true 100%soc capacity.


Mark & Jan "Old age & treachery win over youth & enthusiasm"
2003 Fleetwood Jamboree 29


pianotuna

Regina, SK, Canada

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Posted: 01/24/13 07:08am Link  |  Print  |  Notify Moderator

Hi Mark,

It is pretty hard to add acid to an AGM style battery? *grin*.

MNtundraRet

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Posted: 01/24/13 07:12am Link  |  Print  |  Notify Moderator

Sorry! Missed that.

I have not had the second cup of coffee yet. Rest of post would hold true.

mena661

Southern California

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Posted: 01/24/13 07:26am Link  |  Print  |  Notify Moderator

pianotuna wrote:

Hi Jim,

Identical recent date codes would be good.
X2


2009 Newmar Canyon Star 3205, Ford F53 V10
Trojan L16 6V's 740 Amp-hours


HiTech

Texas

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Posted: 01/24/13 10:26am Link  |  Print  |  Notify Moderator

Had a great talk with Mark at CBC Battery in Houston. I noticed some antique battery jars they had from my reading of the old school battery rebuild manual provided by a member here. Among other things they had a glass jar for a farm lighting battery from way back.

Mark gave me a $28 savings on the same two batteries in their email quote. Pays to read those old battery manuals LOL!

All the codes are the same except the cavity numbe on the injection molding for the case. I think the date code it ink jet printed on the end of the pre printed bar code label.

Now to get the mounting for them squared away on the trailer tongue.

Jim

BFL13

Victoria, BC

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Posted: 01/24/13 10:44am Link  |  Print  |  Notify Moderator

The real when made date code would be stamped on the plastic case somewhere. (with a letter for the month) (Trojan 6s have a date on the lead post) The sticker seen on top would be when last charged. The third sticker with the date punch outs is when you bought it.

Compare the when made date with the last charged date.


2003 Chev 2500HD Gas, 2003 Komfort 26FS 5er
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mena661

Southern California

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Posted: 01/24/13 10:46am Link  |  Print  |  Notify Moderator

I remember when I bought my batteries. Fun day. BFL, my date code was stamped on the case also.

HiTech

Texas

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Posted: 01/24/13 12:36pm Link  |  Print  |  Notify Moderator

I will look when I get them out in sunlight. My eyes are not what they once were.

Jim

* This post was edited 01/24/13 07:31pm by HiTech *

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