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Old 07-21-2019, 03:49 PM   #151
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Default Re: Agile battery separator

I suspect your bench charger is not up to the job for some reason.

You don't need to disconnect the separator unless you are testing the current drain with a meter. Leave it connected and let it do its job. It will disconnect itself when the battery voltage drops below 12.8. Plug in the van charger for a couple hours. Unplug the van and check voltage once a day and and see how fast it goes down.
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Old 07-21-2019, 04:09 PM   #152
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Default Re: Agile battery separator

Make sure you connect the separator before plugging in the charger.
After charging, before unplugging the van charger, check that starting battery has settled at the float voltage of 13.3 to13.4. Just to make sure the charging system is working as expected.
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Old 07-22-2019, 12:09 AM   #153
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Default Re: Agile battery separator

Thanks for the tips, I'll reconnect things and plug the van in to charge. I'm wondering about the bench charger as well. Thanks!

Steve
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Old 11-25-2019, 07:52 AM   #154
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Default Re: Agile battery separator

Quick question, is the separator suppose be warm with the van parked and everything off? With the separator ground disconnected the starting battery with out the radio connected only dropped from 12.9 to 12.78 in 8 days. Separator connected, both starting and house batteries go down equally, presently 12.75 after charging 24 hrs prior. Just wondering about the separator draw.
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Old 11-25-2019, 07:13 PM   #155
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Default Re: Agile battery separator

It doesn't matter whether the van is parked and everything is turned off. The separator operates independently. It engages when the voltage on either main terminal rises above 13.4, and disconnects when the voltage drops below 12.8. The specification for these trigger voltages is plus or minus 2%, so it could stay engaged a bit below 12.8. The way to test the separator is to turn on a significant load like the headlights (without the engine running or the shore power connected) which will pull the voltage down well under 12.8, and the separator should disconnect. It should reconnect after you start the engine or plug in the shore power.

The solenoid coil in the separator draws 0.75 amps when engaged, which means it dissipates about 10 watts, so yes, it gets pretty warm. Too hot to leave your finger on very long, as I recall. As discussed in other threads in this forum, this separator is a pretty crappy unit and should be replaced by a Blue Sea relay if you suspect it is malfunctioning.
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Old 11-25-2019, 07:15 PM   #156
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Default Re: Agile battery separator

When the separator is disengaged, it only draws 13ma for its circuitry to monitor the voltages.
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Old 11-25-2019, 07:49 PM   #157
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Default Re: Agile battery separator

... 13 milliamps * 12 volts = 0.156 watts. You shouldn't be able to feel that feeble output.

Something is probably wrong.

--dick
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Old 11-25-2019, 08:46 PM   #158
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Default Re: Agile battery separator

Quote:
Originally Posted by autostaretx View Post
... 13 milliamps * 12 volts = 0.156 watts. You shouldn't be able to feel that feeble output.

Something is probably wrong.

--dick
As I interpret his post, the separator is still engaged because the voltage is still at or above the cutoff point. Therefor, it is drawing 0.75 amps. This is why I suggest he turn on the headlights, drawing voltage down and check that the separator disengages.
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Old 11-25-2019, 08:52 PM   #159
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Default Re: Agile battery separator

The +-2% voltage specs for the separator means the cutoff point could be as low as 12.54 and still be in spec. Add whatever inaccuracy in his meter, and we can't be sure the separator has failed unless it is still engaged at a lower voltage.
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Old 11-25-2019, 10:03 PM   #160
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Default Re: Agile battery separator

I checked the separator and it now feels cool to the touch, but I tried the headlights which had no effect. The voltage at that point was 12.74, so if the tolerance is +/- 2% it appears to be on the tighter side. I'm still trying to find a replacement for the current radio, GPS,, camera to kill that draw.

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