This is 2021 model with 4 digit display
This is latest 2021 advancement on all existing models. It is the only 4 digit display battery equalizer BMS. At a glance you will immediately see the battery voltages
24v battery balancer/equalizer
When two or more batteries are connected in series or parallel, voltage differences begin to occur as the batteries charge and discharge. While some batteries may be overcharged,other will be undercharged. This causes battery sulfation and ultimately reduces the life span of your precious battery bank by about 2-3yrs
Once voltage difference of 2mv is detected, this energy transfer battery equalizer automatically begins to move current from higher to lower voltage battery until equilibrium is attained
This is a must for every solar installation
specification
1. 2 batteries in series
2. 4 batteries in series/parallel