A âGroup Assetâ in SAP is almost like a normal asset except that it can have (any number of) sub-assets denoted by Asset Sub numbers. The concept of group asset becomes necessary when you need to carry out depreciation at a group level, for some special purposes such as tax reporting.
With a regular charge controller, if your batteries are low at say 12.4 volts, then your 100 watt solar panel rated at 6 amps at 16.5 volts (6 amps times 16.5 volts = 100 watts) will only charge at 6 amps times 12.4 volts or just 75 watts. You just lost 25% of your capacity! charge controller is used to maintain the proper charging voltage on the batteries. As the input voltage from the solar array rises, the charge controller regulates the charge to the batteries preventing any over charging.
A good 3 stage 40 amp Charge Controller will run about $140 to $225 depending on features like LCD displays. For eight 75 to 80 watt solar panels you would need two 40 amp Charge Controllers to handle the power or you could increase your system voltage to 24 volts and still use just one 40 amp Charge Controller. charge controller is used to maintain the proper charging voltage on the batteries. As the input voltage from the solar array rises, the charge controller regulates the charge to the batteries preventing any over charging.