question

mobi avatar image

EasySolar 24/3000/70-50--MPPT150/70 exiting absorption stage too early

@Guy Stewart (Victron Energy Staff)

@Margreet Leeftink (Victron Energy Staff)

1] EasySolar SAPS w/- 24v/666Ah/c10 batt'. Batt' manufacturer's specs require 3hr absorption

1a]MPPT always exits Absorption stage after 1hr - when set point is 3hrs - regardless of solar pv conditions

2] system energy usage = no daytime load/battery consumption = 2.6hrs nightly/1.80kw load, load disconnected @ 68%soc.

2a] have tried increasing to 60%soc over extend period still only 1hr Absorption

3] MPPT & multi firmware upgrade and battery settings rechecked 21/01/2019

any ideas & or solution??

Cheers


EasySolar All-in-Oneabsorption
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1 Answer
JohnC avatar image

Hi Mobi. Your mppt is 'fine tuning' your manufacturer's recommendations. Should it do that? is for you to decide. This is old, but these things don't change much: https://www.victronenergy.com/upload/documents/Adaptive_charging_how_it_works.pdf

See here too (roll to Absorption Time Limit): https://www.victronenergy.com/live/victronconnect:mppt-solarchargers

You'd need to add kit to your Easy to adjust that (for now). I wouldn't worry myself..

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