Easy instal. 4 mount bolts and 3 wires. I did elect to install a relay to the “wire bridge” but it’s not required. The app is full featured & very professional. The manual can be confusing, but I’ll clear that up quite simply - here goes: “Ignore section 4.5!” On first (and second and 3rd) read, it seems like this is a required step but it’s completely optional. If you’re not a pro installer, you probably don’t want to override this safety feature anyway. If you’re installing in a camper you probably have plenty of room. My install was under the hood of a Silverado and the only space it fits was in the flowmaster cold air intake housing. Paired with a Victron battery on the spare battery tray.

Upgraded to lithium in my RV. Bought this to avoid changing the alternator or burning it up. The idea is to limit the alternator draw to 30A while filling a 550Ah pack. It plays well with my BMS. It runs hot. Not just a little, but HOT HOT. Reading the Victron sites, everyone is complaining about how hot it runs. Only feedback from the manufacturer is that it needs to be installed properly. OK... clear 10cm above and below? Good luck finding that extra space in an RV. Thanks Victron, looks like you misestimated the airflow requirements, especially in the desert. (And it's only spring!) I'm guessing these will have a short life in many applications due to the thermal stresses causing failure. Good thing is that with a fan it seems to operate properly. I designed an ... MoreUpgraded to lithium in my RV. Bought this to avoid changing the alternator or burning it up. The idea is to limit the alternator draw to 30A while filling a 550Ah pack. It plays well with my BMS. It runs hot. Not just a little, but HOT HOT. Reading the Victron sites, everyone is complaining about how hot it runs. Only feedback from the manufacturer is that it needs to be installed properly. OK... clear 10cm above and below? Good luck finding that extra space in an RV. Thanks Victron, looks like you misestimated the airflow requirements, especially in the desert. (And it's only spring!) I'm guessing these will have a short life in many applications due to the thermal stresses causing failure. Good thing is that with a fan it seems to operate properly. I designed an air distribution manifold and printed on my 3D printer. Black on black in the picture, so a bit hard to see, but look under the unit. Fitted a little 2" fan pushing 6CFM through the fins. Only pulls 0.14A and the unit no longer gets hot. It doesn't seem to need that much airflow, but convective air currents don't seem to be enough from both my and other's experiences. The heat sink is big, they tried to size it to handle the thermal load, but without airflow it's useless. Glad they made the investment, as the small fan really works well with the large heat sink. The bluetooth link is nice, but the app needs more features. It tells you charging state, voltages and current; Should also report temperature. Programming through the link is useful and well laid out. I can see where people without smart phones/desire to use technology will find this frustrating. I just wish there was more information. Would be nice if Victron had an output to drive a relay that was either temperature or output current based.

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