Battery Tender problem

KenK · 2016-05-23T17:38:18+00:00

I use a Battery Tender charger to keep my deep discharge 12V backup battery charged. This battery is used to provide me with a fan and a light, if needed, at home during a power outage. After no problems for years the past few days the charger has started blinking its green light for a while, the steady green again after a few hours. The manual says the light blinks when the battery reaches 70% charge. This is occuring during a normal period of no power outages. So it seems to only be supposed to happen when charging. Normal charge condition is shown by steady creen light, which was the usual condition in the past. Anyone familiar with this charger? Any suggestions? Just ignore it? TIA

May 23, 2016 21 Replies

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clare 10 years ago

The Battery Tender Junior starts at around $45 US. If it's not made by Deltran it's not a "battery Tender"

These are MAINTAINERS, not chargers. Good for keeping a battery up in starage - useless for charging a dead battery.

The 10 battery unit is up around $750 - called a "battery managemenr system"

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trader_4 10 years ago

Why are they useless for charging a dead battery? They put out about an amp, it take awhile, 10X as long as one that puts out 10 amps, but they will charge a dead battery.

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