Recent content by RF_Burns

You need larger cables from the charger to the battery. Read the voltage at charger and compare it to the voltage at the battery and you will be surprised at the difference. Better yet, read the voltage across each of your wires from the charger to the battery terminals. I also bet that you...

FYI, Saw this on my motorhome group on FB. Walmart has Chins 100Ahr LiFePO4 for $266. https://www.walmart.com/ip/CHINS-12V-100AH-LiFePO4-Lithium-Iron-Battery-100A-BMS-for-RV/1854728852 Delete this info if not allowed here.

I was in two-way communications (Police, Fire, commercial, industrial) for over 40 years. Most electronic equipment is not RFI hardened. I've seen equipment do some weird things when the microphone is keyed, like a farm tractor that went into crab-walk mode. Manufactures could fix this with...

Sorry for the delay in replying. Either of those should work, however the first one has it's own enclosure and plug'n play wiring (note your internal lamp won't light when you open the door if the compressor is OFF. You would need to cut a rather large hole to get the cord back outside since...

5.8 kWh per Gallon Honda Generator to DC @ 93% efficiency I don't understand where the "93% efficiency" comes from. It seems to me you are comparing the output kWh from the generator display to the energy delivered to the batteries. That only tells me the efficiency of your charger...

Vigo is correct, there is losses in both AC and DC circuits. What is critical to remember when wiring Inverters is the DC side has approximately 10 times the current flow at 1/10 the voltage. I plugged in some numbers into a voltage loss calculator considering a purely resistive 1200 watt load...

My electric fridge has a simple mechanical thermostat so actually takes no current when the compressor is OFF (well except for the internal lamp when you open the door!). Its the microwave and other devices that I have powered by the inverter that do not like to be power-cycled every few...

I'm a bit late to the party here.. but, with your Inverter/charger you want to install it as close to your batteries as possible. The reason being is the low voltage DC side will see at least 10x the current of the AC side. Also the output of the charger is regulated at the DC side while its...

I've been using a Samlex EVO-1212 powering mainly our AC compressor fridge. It is rated for up to 3x surge current so 3600 watts for this model. It works great and is a step up from using an inverter only. It is an Inverter/Charger with built-in transfer switch. The EVO models synchronize...

The trick is to bond all the grounds together at a central point together with earth ground. That way the potential difference (voltage) is near zero between all the devices. If you do get a surge from a close-by lightning strike all the devices may see a surge voltage, but the surge voltage...

I believe the BMS High-Voltage Cut-off should be set at 14.6V as it should be the last resort in high-voltage protection. That allows the charger to set the bulk charge target and have its high-voltage cut-off just under the BMS level. My Samlex EVO logs and over-voltage alarm, then resets to...

Backdoctor, I'm just wondering what your charging problem was? I got two Alberta Lithium 100Ahr batteries for our motorhome back in the spring of 2021. I setup my Samlex EVO to charge to 14.4V, then float to 13.5V. The batteries would charge to just over 14.2V, then go open circuit and the...

My Samlex EVO Inverter/Charger/Transfer Switch logs the charging progress and any events (errors), so I could see what was happening. I called them about it. They simply stated that the battery was "Charged" and so cut off the charging current. However from my understanding, the BMS...

I bought two 100Ahr batteries from Alberta Lithium last year for my motorhome. My only complaint with them so far is if I set the target voltage above 14.2 volts @ 40amp (~20A to each), the BMS will open circuit once it hits above 14.2V. I don't know if one of the cells is out of balance and...

I've had my Samlex EVO since 2017 as well. The fans are noisy especially in our small motorhome.and I've sent them a email about this. I did open mine to see if I could replace them with a better fan. Its not for the faint of heart and I ended up putting it back together with the noisy fans...