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"The main advantage of the overkill vendor, is that he offers a good warranty, and some support. Which is typically much better than any of the direct from china vendors." Yes, he does answer e-mails promptly and he sends you peanuts with your BMS! Makes cocktail hour better!

For those following the question of whether you can use a constant voltage switch to trigger a Blue Sea Magnetic Latching relay, Blue Sea sent me an e-mail saying to use this: https://www.bluesea.com/products/7713/ML-RBS_Remote_Battery_Switch_with_Manual_Control_Auto-Release_-_12V So, the...

Thanks, but those require a Victron BMS and don't work with the bigger controllers. In any case, it may be moot for all practical purposes.

Tanx! Methinks you summed it up nicely with the part about "too much time on their hands." ;)

Thanks! Victron tends to confirm that their charge controller doesn't care but there may be a spike. https://community.victronenergy.com/questions/28201/controller-damage-if-the-battery-is-disconnected-b.html The 150/45 has the remote control terminal, but I don't know where to get a signal to...

Many thanks! While I hope that I will never stress the BMS, I am dealing with two issues. -- The first is a way to disconnect the solar panels from a solar controller in the event that the BMS shuts down the battery. In a perfect world this happens one second BEFORE the BMS drops the load, but...

Hence my comments. Will see what they say, but methinks that for cases where you have long term voltage, you need an "L" series relay (with "coil economizer") or similar. I used one of these monsters on my Tiger, for years, with no problems, even mounted below the camper. Ordered a new one for...

Sent a query to Blue Sea as this has puzzled me for a long time. Also asked if the ML relay will draw less than an S relay. (It should.) Let's see what they say.

As I read the diagram, it wants a pulse. Don't know what will happen if it sees a steady 12v.

Looking at the Blue Sea site, it appears that you cannot control the ML relay with a simple voltage present/absent circuit, but rather you need to give it pulses.

I am reaching out to Overkill, but, at least at first glance, to be functionally an intelligent relay with balancing. (I can hear John61ct cringing!) There are a few other terminals, temp, and, I believe, a Bluetooth card. There is also something labeled as a "Discharge Switch," normally...

Dumb question. What do you measure across the battery terminals when the BMS has shut down? Could you not simply drive a relay across the + and - terminals of your battery? BMS disconnects, relay opens? N.B. I am using the Overkill Solar BMS. In my case, I am considering the Victron 150/45...

Pretty dog. Is this a good time to suggest considering a B2B? Not to boost voltage as in the old days, but rather to control the amp draw?

Our radiator fan was so noisy that folks thought we had a genset. When we had a 6k BTU A/C in the Tiger the air flow, on the lowest setting, was so strong that we had to sleep with our heads on the driver's side. Wish we had that kind of air flow with our current setup. FWIW, we found that the...

Best wishes! After much agonizing and some serious hand holding by one of our brighter members here, I am in the process of ordering the same cells for a 12v battery bank.

As mentioned previously, I used a radiator fan and a PWM speed controller to keep the noise down. The one I used is out of stock, but I'm sure you can find others. Air flow is critical to avoid burned out air conditioners. The good news of this type of A/C is that it does a good job (too good?)...

Beloved Spouse and I have been fairly serious bike enthusiasts since the 1980's, touring in the US and Europe and I even did some very amateur racing. On our last trip to Canada we took our Cannondale MTB's along for fun as as toads. The bike riding was fun, but we did not have an external rack...

If you can get most of your appliances in 24v, then with a 24v truck, that is a no brainer. Especially as once you get down to 10-15a, 24>12v converters are cheap.

Random Thotz: -- In the US, 24v appliances are rare, hence a 12v camper battery and 12v refrigerator, etc. If on the other hand, you are running a 240v appliance(s) through an inverter, then a 24v battery bank might be fine, using a Victron or similar converter to produce enough 12v for...

While it is none of my business, I gotta ask. What are you planning to drive with over 500Ah of lithium. I'm struggling with air conditioning and I'm not getting those numbers.