Search found 1590 matches

by Starscream
Tue Apr 07, 2026 7:18 am
Forum: MacGregor Powersailor Discussion
Topic: New Boat/Travel Refrigerator Suggestions for 2026
Replies: 16
Views: 1229

Re: New Boat/Travel Refrigerator Suggestions for 2026

We're using this one: https://www.amazon.ca/dp/B08D96FM73?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2&th=1 Price is right, real compressor, optional split between fridge and freezer or all fridge or all freezer. Our 100W solar panel can keep it going in good weather. It's been two years and it'...
by Starscream
Tue Mar 24, 2026 11:45 am
Forum: Trip Logs
Topic: Abandonded Vessels
Replies: 4
Views: 876

Re: Abandonded Vessels

While the original discussion was prompted by vessels in the Florida Keys, the problem of abandoned vessels seems to be ubiquitous so please feel free to add your local perspective. I'm particularly interested in some of our non-American member's experiences. I've never been to Florida but I've hea...
by Starscream
Thu Mar 19, 2026 4:59 pm
Forum: Trailers & Towing
Topic: New Tow Vehicle
Replies: 26
Views: 11652

Re: New Tow Vehicle

Mileage ended up being 17.7mpg for the trip, which I was a little surprised by, as it’s only about 4mpg under the Santa Cruz’s city rating! Kinda crazy for pulling a 3,500# boat that’s quite a bit taller than the trucklet, but I’ll take it. That's pretty good: our 2006 Durango 4.8 V8 got about 11.7...
by Starscream
Thu Mar 12, 2026 8:46 am
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

Re: 300Ah LiFePO4 upgrade

Thanks Be Free and Starscream for all the info! I find myself a bit electrically challenged I'm afraid. Heres a couple of questions I have: 1-Im finding when reading up on the Renogy DC to DC charger when the Start battery (lead acid)has satisfied with charge the Renogy will start pulling 20 Amps t...
by Starscream
Wed Mar 11, 2026 12:16 pm
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

Re: 300Ah LiFePO4 upgrade

If you put in the 1/2/off switch at least add a jumper pack that can start reliably your engine. Murphy is very patient (he out-waited me). You don't want to be a long way from home with too much (or too little) wind and no way to start your engine. Too bad about the DCDC voltage. Like I said, the ...
by Starscream
Wed Mar 11, 2026 11:51 am
Forum: Repairs and Modifications
Topic: Electric cookplate
Replies: 14
Views: 1323

Re: Electric cookplate

My $0.02 from 45N lattitude where 95F feels like baking in an oven, and not considering the cost to buy or operate either system: The amount of heat that escapes into the cabin when using alcohol or propane is much more than that produced by an induction plate. Also, the amount of time invested in ...
by Starscream
Wed Mar 11, 2026 9:02 am
Forum: Repairs and Modifications
Topic: Electric cookplate
Replies: 14
Views: 1323

Re: Electric cookplate

Thank you everyone. My friend has embraced the LION battery tech. I am not quite ready to make the leap. He also has these huge wires everywhere, so they can be inspected if they get hot. He likes messing around with inverters and things. They take up space on his larger boat. I know he means well ...
by Starscream
Wed Mar 11, 2026 8:18 am
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

Re: 300Ah LiFePO4 upgrade

Just realized there's a fundamental error in my wiring diagram: it showed three connections from the DC to DC to the house battery: the non-fused heavy-weight one was a leftover from when I added dashed lines for the voltage sensing line and forgot to remove the original heavy-weight wire. AI didn't...
by Starscream
Wed Mar 11, 2026 8:06 am
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

Re: 300Ah LiFePO4 upgrade

Im so glad you brought this up Starscream! You diagram looks great. It looks like the DCDC charger you are using has an isolated ground. Was that by design or does it just look that way in the picture? One of the complications of Starscream's design is the battery monitoring setup. It requires care...
by Starscream
Wed Mar 11, 2026 7:54 am
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

Re: 300Ah LiFePO4 upgrade

Timely thread! Looks like I'll get some time to work on the boat next week as it's spring break and it's supposed to be in the mid-70s at the lake. I've got the supply side sorted with two 130w flex panels in series connected to the MPPT solar controller/DC-DC converter, and a pair of 100Ah LiFePO4...
by Starscream
Wed Mar 11, 2026 7:47 am
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

Re: 300Ah LiFePO4 upgrade

Im so glad you brought this up Starscream! I am doing the same thing with the exception of Solar. Yours looks pretty complex! Heres a diagram of what I've found on the net that seems to be somewhat similar. But I look forward to the experts in here letting us know the right way! PS I use a Honda EU...
by Starscream
Wed Mar 11, 2026 7:43 am
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

Re: 300Ah LiFePO4 upgrade

I don't see anything wrong in the charging circuits. The outboard will always charge the start battery and the DCDC charger will charge the house battery. As soon as the start battery can hold 13.2V the DCDC charger will begin to charge house battery based on the profile you choose. With a single 1...
by Starscream
Mon Mar 09, 2026 12:48 pm
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

Re: 300Ah LiFePO4 upgrade

Be Free wrote: Mon Mar 09, 2026 12:15 pm Generically it looks workable but the devil is in the details.

Can you provide make/model of the DC-DC charger?
Hi Bill, I was hoping you'd answer this :) It's a Renogy RBC50 MPPT dual input, with the bluetooth module.
by Starscream
Mon Mar 09, 2026 11:38 am
Forum: Repairs and Modifications
Topic: 300Ah LiFePO4 upgrade
Replies: 23
Views: 1697

300Ah LiFePO4 upgrade

Round 2 of electrical work. Last year I added a 100Ah lithium battery to our two 80AH lead-acid batteries in a non-standard way, the intent of which was not to touch the original system and have a super-easy install. What I did worked, but it's not a permanent solution. On our mini-loop trip last ye...
by Starscream
Mon Mar 09, 2026 10:47 am
Forum: Repairs and Modifications
Topic: Electric cookplate
Replies: 14
Views: 1323

Re: Electric cookplate

Well, my AI buddy CoPilot says: "Bottom line Expect ~20 Ah at 12 V to bring ½ gallon of water to a rolling boil using your 1000 W inverter and an induction cooktop." I'm redesigning my electrical system and am enlisting the help of Copilot, and I'm astounded by how good it is but also by h...