HoneyBadger Installation Manual
HoneyBadger Install Version 2
Page 13 of 32
Issue Date 18/07/2022
Maximum PV array current:
Maximum PV open circuit current = 70A for the Victron MPPT 250/100 installed in the HoneyBadger
As the Isc of the example 400W panel is 10.12 amps up to six (6) strings can be connected in parallel.
However as the nominal rating of the MPPT with a 48V battery is 5,800W. A single string of 4 x 400W
panels is 1.6kW, so 4 strings in parallel = 6,400W which is sufficient in most situations.
This also more than covers the recently introduced 1.25 times safety margin on manufacturers Isc.
Reverse polarity protection:
The MPPT is not protected against reverse battery polarity, however this is not an issue as it is pre-
wired by RedEarth.
Victron have the following comments about connecting the PV polarity in reverse, which is in the
installers hands,
Further details are available for the Victron MPPT at this link,
https://www.victronenergy.com/upload/documents/Manual_SmartSolar_MPPT_150-70_up_to_250-
100_VE.Can/MPPT_solar_charger_manual-en.pdf
A sizing calculator by Victron is available at this link,
https://www.victronenergy.com/mppt-calculator
Example of Solar panel connections using the supplied in-line fuses and MC4 branch connectors:
As up to 4 strings are connected in parallel string
fusing is required on every string. In-line fusing is
supplied (8 for each MPPT) with the HoneyBadger.
This is sufficient for up to 4 strings per MPPT.
One in-line fuse is connected to each +ve and -ve
cable coming from each string.