G29 Not charging fully delta charger

[johno1au]

This is probably a broad question but I have a Yamaha GDRE 2008 G29 with a Delta charger which charges the batteries but it does not seem to charge the batteries fully before going into trickle mode. If I disconnect each battery from each other and charge using a normal car charger with a current meter you can see the current is high 4-6 amp and takes few hours to charge down to 0 amp and when all 4 are charged I can get 1 - 2 hours out of the cart, but when I use my delta I might be lucky to get half an hour. I am not using trojans but deep cycle 12v batteries. I understand the Delta chargers are golf cart specific (Yamaha program etc) so would changing the batteries from non Trojan effect the charging? Any thoughts would be appreciated.

Cheers

[cgtech]

What is the specific model of your batteries? Do they say the words "golf cart" on them any where? Do they say "marine" on them anywhere?

[johno1au]

HI, they do not say golf cart or marine but here are the specs.

Cheers

SuperCharge D87L AMP-TECH 12V 120Ah Deep Cycle Battery

Description - Deep cycle battery with long running power and low current drain.
Application - For campervan, golf carts, Solar

Features
Full 12-months* warranty. High density plate design to deliver constant power supply without loss of capacity. Prevents damage to plate's active material due to vibration.
Built to withstand multiple extensive discharge and re-charge cycles

Volts : 12
20 AH : 120
5 AH : 96
RC: 96
Length : 333
Width : 173
Height : 215
TH : 239
Wet Weight : 28.3
Assembly : D
Terminal Type : STD
Other Features : CT, FDH
Warranty : 12

[cgtech]

Those are hardly near specs for golf cart use. The lowest/cheapest (totally worst) ones used by the factory were 150ah @20/hr. Sorry, those are below spec for use in golf carts. You have batteries that will never "act normal" in golf cart use. The way a cart charges & discharges the batteries simply don't match those batteries. Unless you can return them, use them the best you can until they are toasted, then get real golf cart batteries.