Is 35 amps enough capacity for a charge controller? - Page 4 - Fiberglass RV


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Old 05-30-2016, 01:22 PM   #43
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Name: Gordon
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Originally Posted by MCDenny View Post
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I use a 30 amp iota smart battery charger, a 10a PWM solar controller with a 100 amp solar panel, a Victron BVM700 meter and two 6v 220ah batteries...
Thats a typo.. he means 100 watt solar panel (or about 5.6 amps in actual use).
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Old 05-30-2016, 02:47 PM   #44
Raz
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Note on the BVM700, it uses a 500 amp shunt and resolves current to 10ma, that's 0.01 amps.

From the BVM 700 spec sheet they list the shunt resolution as 50 mV for 500 amps.

So 50 mV/500 amps = 0.1 millivolts per amp shunt resolution. That's 100 microvolts for each amp of current flowing through the shunt.

So a 10mA current through the shunt will produce a voltage of 1 microvolt. That's one millionth of a volt.

Read 10 mA.? Sorry Denny, but this old engineer is skeptical. Raz
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Old 05-30-2016, 05:54 PM   #45
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100 amp solar panel, I wish. Of course I meant 100 w, which only puts 65 watts into the battery.

Trojan battery charger specification is10% to 13% of battery C20 rating.

Re the BVM 700 meter, they say 10mA but I hear you Raz.


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