jd1923

Recommended Charge Current is 50A on the Epoch 300AH LiFePo4 battery, and Max Charge Current is stated at 200A. That is a large difference. My question is, what would "recommended" be for two batteries in parallel? For batteries wired in parallel we add amperage, so why not add amperage of charge rates? I could not find a decisive answer to this question online. For these batteries Recommended Discharge Current is 100A and Max Discharge Current is 200A. I've set our Victron MP2 at a charge rate of 50A where up to 120A is available. I want what’s best for the batteries, but if I only have limited time on shore power, can I charge at stronger charge rate? Is it OK to be greater than the recommended rate and still considerably less than Max?

I had suggested 2WD earlier in this thread. Though hard to find one these days on dealer lots. Any 4WD truck is a climb! Love our 2WD TV, easy step up and it's not like you're going rock crawlin' with back issues! The weight of a TV is mostly on the rear axle, front wheels are important for steering vs. pulling.

Get these parts to flush black or gray tanks: https://a.co/d/1jRtUTP https://a.co/d/b4RE4F6 https://a.co/d/5eEU0sE

Actually, @Frank C did it first and best, quite detailed using u-clips. Mine was a quick job but the part re mine I like is the rubber seal, inexpensive part too!

Looks like you’re going to have to open it. I put mine back with 4 screws, drill 5/32” holes, rubber washers and a white rubber seal, no caulk. https://a.co/d/5G5pVZd

I did this upgrade first and by itself. Made a shorty cable and just mounted it at the batteries. You also need to connect the red wire to positive, so simple. When I upgraded to LFP and new inverter, I mounted the shunt at the other end of the B- battery cable closest to the inverter to get it out of the battery bay.

Yeah, my older 2KW Xantrex had the remote on/off button, no display, and I never thought to see if there was an app. For $100 and easy installation, the Victron SmartShunt is a very nice accessory! Now with Victron MP2 Inverter and MPPT Solar charger, I have 3 app screens to view. This one is for the SmartShunt. It's about 2PM, SOC is 100%, so the solar charger is only needing to add +0.75A net (in addition to amperage being used by 12V accessories/lighting and the inverter at idle. This can be added regardless of make and model of other system components: Amazon.com: Victron Energy SmartShunt IP65 Battery Monitor (Bluetooth) - Victron Smart Shunt - 6.5V-70V, 500 amp : Automotive

Just leave it on. Measure how much amperage it is drawing. The older 2KW Xantrex we had, took 1A when no 120VAC is being supplied. Our new Victron MP2 also takes approx. 1A at idle. This adds up to 24AH per day. Divide 24 by the AH of your battery bank for SOC loss. We have 600AH which comes to -4% per day. But with the solar charger running, net amperage is always positive during daylight hours, until you run a 120VAC appliance. We generally leave it on 24x7 unless we're gone for the day. We run our TV and Soundbar afternoons and nights, often the next morning too. Use our 1100W electric tea kettle to heat water for coffee and SOC is often 90% or high 80s. Maybe some microwave use and it's always back to 100% by the afternoon, unless it's raining or extremely overcast. Not sure if Xantrex has a good app. We added the Victron SmartShunt prior to upgrading our inverter. I'm checking SOC and +/- Amps on the phone app regularly and always just before leaving the Oliver for the day. One night we hit the fridge into DC mode without knowing it. I should have checked the app but had my phone charging at the dinette when I got into bed. Woke up at dawn to see the DC light on, checked the app and SOC was down to 63%. That was with the 450AH lead-acid we had at the time which is not a good situation. The following sunny day we got back up to 83% and then 90% the day after, rooftop solar only. Still used our inverter, ran the TV, but heated coffee water using LP on the cooktop! Keep in mind due to the fridge DC mode, this error would have occurred with the inverter on or off.

This is also true with the Victron MP2 setup where "User Defined" allows you to manually set charge rates to battery manufacturers' specifications. For Epoch batteries, the Absorbtion rate is 14.2V and Float 13.6V.

Thank you, but the old body is too sore, and our to-do list is never-ending! 🤣

Can you buy just the rack, less storage boxes? I’d like a 12VDC fridge/freezer back there, locked down, very nice given it fits in the receivers on our old hull. TY!

btw, this is a real bus! rated at 400A, 5/16” of tinned plated copper. You want copper vs. brass and 1/4”+ for high amperage. The OEM bus I relegated to a low amp split bus is brass plated and <1/8”. https://a.co/d/2fpogyT

Yes @MnG KY the other thread just got bumped. She removed the OEM installed restrictors to use the external pressure regulator (restrictor-bad, regulator-good). My first picture shows the backflow preventers (necessary) coupled with restrictors (should remove if using external regulator). I also removed all the OEM valves that had 1/4" openings for motorized ball vales with 12mm openings (.25" to .47"). The valves on your newer hull look different but are still small ID restricting. The drill bits in the second picture are 1/4" and 3/8" showing the inner diameters of these parts. OTT installs 1/2" PEX plumbing but the system is downgraded at every elbow, connector and even more-so at every valve.

OTT should realize regardless of customer choices in solar/inverter/battery options, only two holes into the battery bay for +/- battery cables are necessary.

Hoping everything we need while traveling is now more accessible. I've had the beds in the house for 2-3 months while working on it. Hope when we get them back in there and made, they can stay put. 😂