Battery Tender ???
Le Mans Master
Joined: Oct 2004
Posts: 7,706
Likes: 485
From: Everett WA
C4 of Year Finalist (appearance mods) 2019
On my Deltran Battery Tender it means one of two things:
1) Reverse polarity connection to the battery.
2) The chargers safety timer has activated due to the battery not reaching its optimal voltage. This may indicate a defective battery. Take battery to be tested.
1) Reverse polarity connection to the battery.
2) The chargers safety timer has activated due to the battery not reaching its optimal voltage. This may indicate a defective battery. Take battery to be tested.
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
Directly from Battery Tender.
Thread Starter
Race Director
Joined: Feb 2003
Posts: 11,671
Likes: 20
From: Lake Wylie SC
Well I just had my battery load tested and it passed. After the test it recovered back to 11.8. But my alternator failed the bench test. No power out put. Just so you know, I went with Delco's OE rebuild. Delco has 3 types of rebuilds; their best is the OE which uses all GM parts and replaces the bearings, next is their Gold (professional) which uses quality replacement parts: and then there is there Silver (advantage) which uses value parts. Part stores usually don't carry the OEM rebuild. Rock auto has the OEM rebuild.
Intermediate
Joined: Jul 2020
Posts: 49
Likes: 29
From: Bronx, NY
The Battery Tender 12V/5A charger i purchased showed a fault when I connected it in to the 12V outlet plug in the trunk. It would not charge the battery.
Deltran Technical Support told me the charger must be directly connected to the battery. I doubted the rationale since the wires from the outlet go to the battery.
I tried his suggestion and the charger works fine now.
Deltran Technical Support told me the charger must be directly connected to the battery. I doubted the rationale since the wires from the outlet go to the battery.
I tried his suggestion and the charger works fine now.
Melting Slicks
Joined: May 2007
Posts: 2,075
Likes: 109
From: Longmont Co
Don't know what make or model you have but I found this:
RED & GREEN ALTERNATING LIGHTS: When the red and green lights alternate, then either the 72- Hour Safety Timer has been activated or the battery is defective. 6. Check the battery condition. It may indicate that a very large, good battery is not fully charged, or that a smaller size battery is defective.
