BatteryProtect 12/24-Volt 65 amp

Did I really need it? The batteries I have, have a built in protection but I figure better safe then sorry. Was easy to add to the system. Didn't cost all that much, seems to be functioning well and will hopefully extend my battery life.

Really simple to install, and rock solid connections. BE AWARE: When set for Litium Battery this device MUST be used with something like their BMS to disconnect the load.That point wasn't very clear to me in the instruction manual (a case of "reading into" on my part). When I researched the issue on their web site is was explained much more clearly there. I was able to run my LFP battery down to 11V when it was set to cut off at 12V. I was testing it manually and on purpose, so no damage was done. The battery charges just fine even with the load disconnect ciruit open. Was able to burst a 141Amp load through the device without issue (as measured by a BMV 700). This will be my Go-To product for any project requiring battery protection from here on out. Pros: Rock solid build that can physically hold up to the type of cables and connectors that will be used. Set and forget programming. Automatically allows battery to charge when load disconnect circuit is open. LVD can be controlled by other devices, and switch. Cons: Manual Rev08 27-03-2017 doesn't clearly let you know the load will NOT disconnect by itself in Lithium mode. Buzzer and Relay mode state clearly the load WILL be disconnected.

This product works exactly as advertised. You need to understand this device is to be put in a circuit with loads only. It is not to be used where a charge controller can charge the battery (reverse current). Some devices can produce something called back EMF and they should be avoided as well. Inverters come to mind. I use mine to energize a relay to turn off or on a boost converter. The boost converter 24v charges a solar generator or battery box. The voltage on/off was exactly as described in the manual They could do a better job in the manual describing what devices are allowed downstream.

This is probably an item for an electrically advanced person to install. The instructions that came with it don't really explain how to program for for lithium batteries or for changing the cutoff level for low battery protection. It is kinda cute. Victron's video IS helpful, so look at it. There's a kinda strange way to hook it to ground as the two posts are both for positive going one direction only! Does it do it's job? Don't know yet. I'll see how it works.

I could not find a quality solid state switch that i trusted for remote use at my cabin. This fit the bill perfectly and i don't have to worry about it overheating and burning down the forest.

Over-DISHARGE protection! Over-DISCHARGING is the easiest way of DAMAGING a Lithium battery! This is ULTRA-EASY to program! (or reprogram for other applications), functions as intended! Note: connect your charging Solar-controller circuit to your battery FIRST! , Then connect this.

I purchased this unit a few years ago, and it's functioning great, as intended. very reliable.

The product works quite well within the relatively strict guidelines in the manual (which is a problem, see later). I was able to configure it easily and tie it into the Victron MPPT charge controller (TX pin on the MPPT to the Remote pin on the battery protect). I have several critiques: * First, the unit imposes switching delays rather gratuitously in some cases. It should not impose any switching delays based on the REMOTE input as long as the previous switch didn't happen too recently. Delays are obviously important to avoid false triggers, but the algorithm could use some tuning. This is a particular problem when a Victron charge controller is used to control the battery protect, because the charge controller imposes an additional delay itself. * Second, and this lost them a star, there is significant current leakage from input to output when the unit is "off". The output will float up and this causes the power station I connect one of them to to repeatedly engage its input relay. I had to add a 10K resistor from the output to ground to get it to stop. A product like this should already have such a resistor internally or provide a little socket to which a resistor can be added, or otherwise be designed not to have any leakage current in the first place. * The product warns of switching under load. Switching a FET under load is a simple function of temperature and gate voltage, the product simply shouldn't allow itself to be turned "on" if its too hot. It absolutely should allow switching under load and it is fine if it stipulates a stronger voltage on the control input if that is what it takes to switch the gate of the FET fast enough. It doesn't though. * Finally, and this lost the product another star, it warns of damage if reverse current is applied. This is basically a cop-out for sub-standard design. Reverse current damage can occur because the product is not using a back-to-back FET configuration, so reverse current will flow through a protection diode built into the FET (which isn't designed to handle a lot of current) and melt it. These warnings are basically a "cover-my-ass" problem, covering for poor design. What is the point of having a product that is able to handle "60A" when you can't safely put any real current through it due to all of these use-case restrictions? That's why it only gets 3 stars. For my own use, well, I *AM* switching an inverter directly through this product, and my solution to the reverse current problem (which occurs if the inverter's capacitors feed power back through the protect device in the reverse direction)... my solution is to put a big-ass schotkey diode across the input and output terminals to sink any reverse current. That particular diode can easily handle about 5A of reverse current indefinitely without a heat sink, and a lot more for a sub-second interval, so it should have no problem with reverse current cases as long as the input to the device is connected to a low-impedance source like a battery. It is also possible that ripple feedback from the inverter due to the power factor of the AC devices hanging off of it can cause a reverse current. So if you do use a big-ass diode to work around the problem make sure that it doesn't overheat. So in short, I had to add (A) a resistor to ground off the output, and (B) a diode, and now I can use the device as an actual switch... though in my case, I'm not putting more than 20A through it. And (C) made sure that nominal operation under load does not overheat the diode. These things really should have been built-into the device in the first place. Picture included.

Funktioniert super ! 12V Verbraucher..USB und Licht .für mich sehr gut!

muy eficaz

Bon produit et services

J’ai installé cette protection sur les 4 batteries de service de mon voilier en faisant bien attention qu’il n’y ait pas de courant inverse. Le module défectueux n’a pas été couvert par la garantie. Le technicien de Batterie Megastore ayant une mauvaise lecture de mon schéma électrique…

Colis réceptionné, pièces conforme à la demande.