MNBE-B, D, D3R, E Instructions
(continued)
Rev: A Page 10 of 10
Midnite Solar
17722 – 67
Th
Ave Ne
Arlington, Wa 98223 USA
Ph 360-403-7207
Fax 360-691-6862
This configuration utilizes the same 12 volt group 31 batteries, but hooked up for 48 volts. There
are only 2 paralleled strings in this system. A second battery enclosure may be installed side by
side or on top of each other for double the capacity.
Rumors persist in the industry that the higher voltage battery banks will not supply as much
power as a low (12V) bank. This is simply not true. Take 8 group 31 batteries. Each battery is
rated at 105 amp hours at 12 volts. Each battery is thus good for 1260 watt hours. Eight of these
batteries yields 10,080 watt hours. No matter how these batteries are configured, they will still be
the same watt hour battery bank. Be careful when looking at “amp hour” ratings. You also need
to consider the voltage. Volts times amp hours yields watt hours. This 10,080 watt hour battery
bank conceivably could run a 10,000 watt light bulb for 1 hour or a 1 watt light bulb for 10,000
hours. In power back up applications, count on using up 80% of the watt hour rating. In cyclic
applications you should not go lower than 50% depth of discharge.
This configuration uses 6 volt sealed batteries that result in only one string.
This is a 48 volt battery bank. You could add 3 more cabinets and have only 4 paralleled strings.
MNBE-D With three shelves, Eight sealed
batteries, Inverter and disconnects.
