Batteries or charger

andy. · 08-09-2012, 03:38 PM

Just cleaned all connections in the battery sense circuit and still have a .5v difference. I am currently charging the pack again then will retest all cells with hydrometer to verify if that battery is really the culprit. i bought another battery today and was going to replace it earlier but the specific gravity test had all the batteries in the fair range. guess i will know more after this charge. There may be a set of US2200 and a new charger from scottyb in my future.

JohnnieB · 08-09-2012, 04:36 PM

Sorry, I misspoke. I should have said there was resistance in the charging loop instead of the battery sense circuit.

The charging loop consists of the terminals in the charging receptacle, the wires from the receptacle to the main B+ and B- terminals on the battery pack and the 60A fuse (if it exists) and the high current cables connecting the batteries in series, and all the connections therein.

If the resistance is in the high current cables and/or connection, the cart is also loosing some performance. (Torque definitely - Top speed, maybe)

From what I can tell from your posts, your battery charger is working, but has some control issues that may or may not be a problem with the charger.
At worst, it might need a new control board.

Of course, the DPI charger Scotty sells does have float charge.

andy. · 08-09-2012, 06:12 PM

I cleaned all those connections too. Think I am just gonna order a new charger and try to rehab these batteries if possible. Done put one control board in this old charger, tired of throwing money at it.

andy. · 08-10-2012, 02:51 PM

After a good 12 hour rest pack settled to 37.7v and every cell is in the 1125-1250 range on the hydrometer.

I ordered a new dpi charger from Scotty so I am gonna charge the snot out of them when it gets here. If that does not revive them then i will have to decide on some US batteries or Trojans.

JohnnieB · 08-10-2012, 04:50 PM

If "snot" is another name for crystalline lead sulfate, charging the snot out of them might work.

I got pretty good results doing that to a set that only charged to 85% when I got the cart. Same batteries now charging into the mid 90's.

If it doesn't, buy the highest AH batteries you can afford.
Trojan, US, Crown, Deka are all good brands. Probably others out there also.

08-09-2012, 03:38 PM	#21
andy. Getting Wild Join Date: Aug 2011 Location: Branford, FL. Posts: 77	Re: Batteries or charger Just cleaned all connections in the battery sense circuit and still have a .5v difference. I am currently charging the pack again then will retest all cells with hydrometer to verify if that battery is really the culprit. i bought another battery today and was going to replace it earlier but the specific gravity test had all the batteries in the fair range. guess i will know more after this charge. There may be a set of US2200 and a new charger from scottyb in my future.

08-09-2012, 04:36 PM	#22
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Batteries or charger Sorry, I misspoke. I should have said there was resistance in the charging loop instead of the battery sense circuit. The charging loop consists of the terminals in the charging receptacle, the wires from the receptacle to the main B+ and B- terminals on the battery pack and the 60A fuse (if it exists) and the high current cables connecting the batteries in series, and all the connections therein. If the resistance is in the high current cables and/or connection, the cart is also loosing some performance. (Torque definitely - Top speed, maybe) From what I can tell from your posts, your battery charger is working, but has some control issues that may or may not be a problem with the charger. At worst, it might need a new control board. Of course, the DPI charger Scotty sells does have float charge.

08-10-2012, 04:50 PM	#25
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Batteries or charger If "snot" is another name for crystalline lead sulfate, charging the snot out of them might work. I got pretty good results doing that to a set that only charged to 85% when I got the cart. Same batteries now charging into the mid 90's. If it doesn't, buy the highest AH batteries you can afford. Trojan, US, Crown, Deka are all good brands. Probably others out there also.

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08-09-2012, 06:12 PM	#23
andy. Getting Wild Join Date: Aug 2011 Location: Branford, FL. Posts: 77	I cleaned all those connections too. Think I am just gonna order a new charger and try to rehab these batteries if possible. Done put one control board in this old charger, tired of throwing money at it.

08-10-2012, 02:51 PM	#24
andy. Getting Wild Join Date: Aug 2011 Location: Branford, FL. Posts: 77	After a good 12 hour rest pack settled to 37.7v and every cell is in the 1125-1250 range on the hydrometer. I ordered a new dpi charger from Scotty so I am gonna charge the snot out of them when it gets here. If that does not revive them then i will have to decide on some US batteries or Trojans.