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 Topic: Solar charging - dim lights
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11/8/2020 at 12:21pm
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Yep I concur with Colin21, again I am no expert here, but have been dabbling with leisure batteries during lockdown, if you have one of the Aldi/Lidl type intelligent chargers, it will display �ERROR� if the battery is not holding it�s charge, the charger will go into standby, but it�s a good way of finding out if the battery is goosed or not.
Another test is to fully charge the battery, say overnight or 24hrs, then take it of charge, it could be reading as high as 13.70v maybe more, but after a couple of hours should settle at about 13.30v then monitor for around around five days, if the battery is healthy it will keep to around 12.90v if the battery has dropped to 12.50v then it is ok but only just, if the battery has gone to 12.06v then that would indicate that it is loosing charge rapidly and is only at 50% having had no load, and is in effect of no use.
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11/8/2020 at 2:36pm
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Yep, I have one of the Aili battery monitors on my portable 120Ah LA battery box, the monitor even shows the residual amp leakage when there is no load, apart from the monitor itself, probably less than 0.005 of an amp, quite handy though especially if I have left the 600watt inverter turned on, which draws around 0.50 amp with no load at all.
The Aili battery monitor is really designed to be mounted in a caravan/Motorhome/boat etc, but works fine for me, mounted to my portable battery box, and saves me messing about with a meter if I need to check the battery status, as it can all be done at a glance.
The Aili battery monitor is a copy of the £150 Victron unit, but is just £28 from China, great bit of kit if you are interested in looking after your leisure battery.
If checking for amps with a meter you are best using a clamp meter that can do DC not just AC, just make sure that it’s set for DC as most default to AC, which is what my Mini UNIT-T UT211B Clamp Meter does.
Post last edited on 11/08/2020 14:42:38
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