Can I charge AGM's with Growatt SPF 3000TL HVM-48 Off Grid

[Skysurfer86]

Can anybody tell me will a Growatt SPF 3000TL HVM-48 Off Grid Inverter be able to charge without any extra components 4 x Giant AGM 12V batteries connected in series for 48V? ( https://giantpower.com.au/battery/giant-power-140ah-12v-agm-deep-cycle-battery/ https://toplibattery.com.au/products/growatt-spf-3000tl-hvm-48-off-grid-inverter ) Thanks!

 

[sunshine_eggo]

Can anybody tell me will a Growatt SPF 3000TL HVM-48 Off Grid Inverter be able to charge without any extra components 4 x Giant AGM 12V batteries connected in series for 48V? ( https://giantpower.com.au/battery/giant-power-140ah-12v-agm-deep-cycle-battery/ https://toplibattery.com.au/products/growatt-spf-3000tl-hvm-48-off-grid-inverter ) Thanks!

Yes. However, you should charge the 12V individually to full and again in parallel to full before wiring them in series. This normalizes all four batteries to 100% charged prior to placing in series. what will kill AGM is if some batteries are above the absorption voltage and others below when the 48V system is at peak voltage.

Something like this:

https://www.amazon.com/Equalizer-Regulator-Batteries-Balancer-Connected/dp/B09GLRJL1D

Is a good idea to help keep the battery voltages equalized and prevent damage due to imbalance.