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 > Your search for posts made by 'grizzzman' found 7 matches.

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RE: Reviving flooded deep cycles

Does it turn open circuit because of a mechanical failure? Or does the chemistry flip back and forth? It's strange how my charger voltage display will turn on and off, just as if the battery was a switch and turning on and off. Just seems like a mechanical failure would be permanent. So I dont think it's that. Then you have never seen an internal strap connection "lift off" (go open) then cool and reconnect then. It happens.
grizzzman 01/11/21 09:07pm Tech Issues
RE: 60a DC-to-DC Charger Powered by 220a Alternator

Like a 300 horse engine is producing anything near that at idle...... I have a 40 amp DC to DC charger. It is a buck-boost device. At 14 volts input will output 40 amps at 14.7 cost is 50 amps input. At 12.7 volts (gotta love "smart" charging) 34 amps at 14.2 volts. The 220 amp alt handled both at idle without issue.
grizzzman 01/11/21 04:13pm Tech Issues
RE: Lithium Batteries

Hi Steve, But the existing alternator is not going to "see" the LI bank. And the existing alternator is controlled by the Chassis ECM. In the E-450 the OEM house bank charging circuit is fused at 60 amps (for my unit). The 60 amp are hard to find--so I replaced mine with an auto reset circuit breaker rated at 50 amps. I did add a 2nd charging path with a 2nd circuit breaker, direct to the chassis battery. The wire in both circuits is #8. Back in the old days when I was using double conversion for limiting shore power, the twin 30 amp fuses on the PD (30 amp) converter did "deform" (i.e. quasi melted). They did not, however, fail. When I tried double conversion on a GFCI circuit that the Magnum would instantly trip, the surge current was such that the reverse polarity fuses went *poof* more or less instantaneously, due to inrush current from the Magnum. So, I suspect, that an OEM charging system with replacement LI batteries would blow the fuse before the alternator would fail. My 2013 F150 output 14.0 at all times. My 2019 F150 output 12.7 to 12.9 over a period of 2 hours. Using a Renolgy 40 amp DC to DC charger is a buck/boost device and bumped the voltage to my preset 14.2 at the cost of less amps(34) If your looking for a solution this is what I would advise you look into.
grizzzman 09/19/20 04:01pm Tech Issues
RE: Lithium Batteries

If a person discharges a lfp 100% without proper protection they might deserve to have an expensive brick and doing it 25 times is just idiotic. Pianotuna are you going to test the 25 times bone dead depletion with no harm to the batteries, I won't hold you to the 620 times. ;) LOL I agree. And really the price has come down if you are into a DIY set up.( Although a person in the know says they will jump up in the next little while.)
grizzzman 09/12/20 12:27pm Tech Issues
RE: New trailer, new challenges

Hello all!! It’s been a good while since I’ve been active on here, but always seem to pick up good info from the archives when google searching. We are back in the RV’ing game with our new Highland Ridge 26BH stick and tin trailer. As expected, the overall quality is a bit lackluster - I bought it expecting to beef things up and make mods over time. The one thing I’ve been fighting is battery charging for boondocking with the WFCO 8735 converter. Typical 13.6v, no boost mode conundrum. Basically, this thing pretty much needs to go. I’ve looked at the “Boondocker” model replacement converters (leaves the original distribution panel in place). I’m fairly convinced this would help. 1) what amperage should I get? I’m hoping to get by with my 2 6v batteries if possible. I run a Honda 1000 generator (only for batt charging purposes) - would be willing to upgrade if it makes a substantial difference. With our last trailer, we could go almost indefinitely with 2-3 hours of gen runtime per day. Now - not so much! 2) Some supplemental solar is in our future. Is there a solar charge controller that also allows 110//generator charging input? Thought Is I could leave the converter alone and wire up a separate charging setup close to the batteries with large guage wire for better efficiency. Just a thought, if such a thing exists. I would suggest leaving the WFCO in place(Just switched off while not in use) It is VERY likely that the WFCO is a long ways from the batteries any ways. PowerMax puts out a 55 a PM3 55LK. this unit can be a 3 stage or an adjustable voltage power supply. Mount it as close to your batteries as you can.
grizzzman 08/06/20 06:26am Tech Issues
RE: Lithium Battery Question

A great price! $530 usdthats a fire ready to start. Stick with lifepo4
grizzzman 05/11/20 09:34pm Tech Issues
RE: Lithium Battery Question

A great price! $530 usdthats a fire ready to start. Stick with lifepo4
grizzzman 05/11/20 09:34pm Tech Issues
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