The following information provided is guides and suggestions of our own opinion.
Connecting multiple battery banks in series and then in parallel in the following manner will create 2 floating battery packs and our systems will only be able to monitor the top connected battery pack.
In order to monitor multiple series connected battery banks in parallel the following diagram can be studied. In this configuration the batteries is first connected in parallel and then in series, the batteries can now share current with each other like any other 2 Batteries in parallel would do. The batteries in parallel become one large battery of double the capacity and our system can monitor the complete battery bank in this configuration.
Battery Backup power for wireless communications sites tips
Usually small communication sites with not too much equipment installed with a current consumption below approximately 5 Amps can be run from a 12V battery system
A single 12V battery or multiple 12V batteries in parallel will last longer than series connected batteries due to the voltage imbalance occurring in 24V battery systems
The 12Vdc from the batteries can be step-up to 24Vdc with our DC-DC 12-24 @ 150W unit and is less expensive than another battery to reach the 24V
We recommend a maximum of one of our DC-DC 12-48 @ 80W converters to get 48Vdc for a possible microwave link on the tower.
Should 24V and 48V be needed at the site the installer can use our single DC-DC Converter units or the DC SMART 12V with both converters integrated
Usually larger communication sites with lots of equipment installed or multiple high power microwave links will have to be powered with a 24V battery system
Batteries might not last longer than 2-3 years in series due to voltage imbalance but it is necessary to power the site from 24V to reduce the current consumption from the battery system and to reduce the overall power cable thickness.
24V Equipment can be powered directly by the 24V batteries but remember the batteries will charge to 28VDC which in turn can sometimes be a little high for some equipment
Our 20V constant voltage regulator can keep the 24V to 28V battery voltage constant at 20VDC for sensitive equipment.
Our DC-DC 24-48 250W DC converters can be used to power at least 3 x 48V high power micro wave links.
The installer can use our single DC-DC Converter units or the DC SMART 24V with both the 20V constant regulator and the 48V converter integrated