Setting MPPSolar Bulk and float voltages

A few months ago i bought some renogy 100AH gel batteries for an LV2424 Hybrid MPPSolar inverter, on the batteries is written Cycle use: 14.2v , Standby use: 13.5v, on that moment i set the Lv2424 to user and set bulk to 28.6v and float to 27.5v, because that's the range the spec's sheet specify, but recently i took it to the specific numbers on the batteries and i think they are loosing voltage to fast with the same load, this batteries are almost never cycled, i mostly use them on day time trying to never consume more than i produce, at night time i don't use the batteries, i have several questions

1) Are this charging voltages wrong for this batteries?

2) what's the reputation of this brand? I see mix results on this subject

3) how to know state of charge by voltage, i have never cycled them past 24v, when i disconnect the loads the batteries stay at 24.9-25v, some people say i should disconnect the load at 24.6


I set the max amperage at 10A, with either solar or grid

1) 14.2 * 2 = 28.4 and 13.5*2 = 27V

2) Renogy has a good reputation.

3) You can't.

Voltage is only a good indicator of SoC after resting for 10+ hours. Voltage during discharge will have different voltages for different currents.

A battery AT REST for 24 hours sitting at 12.4V is about 70% SoC. If you've never taken them past 24V, you've likely never discharged them very much. A loaded battery at 12.3/24.6 is still at a high state of charge. Who are these people?

A better solution would be to obtain a battery monitor and assess your actual usage.

snoobler said:

1) 14.2 * 2 = 28.4 and 13.5*2 = 27V

2) Renogy has a good reputation.

3) You can't.

Voltage is only a good indicator of SoC after resting for 10+ hours. Voltage during discharge will have different voltages for different currents.

A battery AT REST for 24 hours sitting at 12.4V is about 70% SoC. If you've never taken them past 24V, you've likely never discharged them very much. A loaded battery at 12.3/24.6 is still at a high state of charge. Who are these people?

A better solution would be to obtain a battery monitor and assess your actual usage.

Click to expand...

Some people i mean things i read on internet.
You mean to monitor Wh and reset it on every use?

Get a battery monitor that can be calibrated for your battery and compute a reasonably accurate SoC.

Anyone got a fix for the mppsolar units going into float too soon. i have 3 different units and if i set float for 27v and bulk for 28v they just charge to 27v.