Is this charger working properly?

[redfishsc]

I recently bought this charger, and using it to charge a standard deep cycle Everstart from Walmart (120Ah or so, I forget the exact capacity).
Schumacher SSC-1500A Ship 'n Shore SpeedCharge Charger with included battery clamps : Amazon.com : Automotive


This is the first charger I've ever owned so bear with me here, I'm looking for advice. I used the battery on my trolling motor on Saturday. Used (according to the MK's battery meter) right at half of the battery.


I put it on the charger at 15A and set it to "standard" (this charger claims any of the settings will charge deep cycle just fine).

A couple hours later I checked it, and the meter was reading 16 volts, and 100% battery capacity charged. It never kicked over to the trickle/maintenance charge. For fear of a malfunction, I unplugged and disconnected it. The battery and cables were NOT hot, they were room temp.


Now the battery reads (no charger attached) 13.4v.

Can anyone explain what's going on?

 

[glenn property of pam]

Re: Is this charger working properly?

test again after the chargers been off a few hours and battery should settle at 12.6 which is 100% charged.

 

[johnbottsr]

Re: Is this charger working properly?

Subscribed.
I bought the same charger and am curious how your results turn out.
In fact, I just put a brand new group 27 deep cycle on it (to "top it off") at the 2 amp setting and it is only reading 38% after 2+ hours.

 

[UncleWillie]

Re: Is this charger working properly?

That is Totally Normal.
It will charge at full CURRENT up to 16 volts. Less if set to AGM or GELL
Then it will charge at a Constant 16 VOLTS as the current is reduced to almost nothing.
That is why everything was cold.
It will run for a another few hours at a very low charge current reading 100%. Normal Topping Charge.

Then the "Charged" light will come on.
It will stop charging until the voltage drops to about 13.3 and then charge for a few second up to about 13.9;
It will repeat this maintenance cycle every minute or so, until disconnected.

If you restart it, it will go through the charge cycle again, but only faster. :happy:

It is operating as advertised. Have patience! A watched Battery .... :facepalm:

Schumacher makes a nice charger with a cheap Fan.
When you get tired of listening to the Fan groan.
A Ball Bearing Replacement Computer Fan can be had for $5.

 

[UncleWillie]

Re: Is this charger working properly?

... I just put a brand new group 27 deep cycle on it (to "top it off") at the 2 amp setting and it is only reading 38% after 2+ hours.

New Wet cell batteries are not fully charged when you get them.
If it was in the store for a few weeks, even more reason to charge it.

The 2 amp setting is for MotorCycle Batteries.
2 amps will take about 40 hours to top off that 90 amp-Hour Battery.
2 amps will maintain a full battery not charge one.