Jan-19-2023 07:34 AM
Feb-24-2023 05:28 PM
Jan-26-2023 05:55 AM
Jan-26-2023 05:35 AM
Jan-25-2023 11:50 AM
Jan-25-2023 05:13 AM
Grit dog wrote:
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But it feels like we’re over your head, OP, and you’ve checked out.
Jan-24-2023 08:27 AM
Jan-24-2023 05:55 AM
Dupa wrote:
The batteries (2 x grp 24 wet cell deep cycle Interstates) were new when I bought the rig
Jan-21-2023 11:00 AM
Jan-21-2023 09:28 AM
Jan-21-2023 08:52 AM
Jan-21-2023 07:45 AM
Dupa wrote:When all 4 Happijacs on our 3000+ lb. 2019 TC are raising the TC up at the same time they draw approx. 25a in warm weather, 30-35a in cold weather (we have the direct drive units). Current draw drops approx. 15-25% when lowering the TC. Two fully charged, reasonably *healthy* group 24/27 batteries should easily power these jacks for at least 1.5 hours before discharging the batteries anywhere near 50%.
I am using all 4 jacks simultaneously. Maybe a little overly simplistic way of thinking about it (and also maybe a little out of my element here) but it seems like the same amount of power/energy is needed to raise/lower the camper, so whether you break it into pieces (1 or 2 at a time) or do it all at the same time (all 4 jacks) shouldn't matter all that much. If I'm wrong, and doing 1 or 2 at a time would help solve my problem, please let me know.
Jan-21-2023 07:12 AM
3 tons wrote:Dupa wrote:3 tons wrote:
Regardless of the seemingly recent shelf date on your batteries or the voltage readout (at best, a marginal estimator of true battery condition…) using only the principle of Occam's Razor (from afar…) I’d say (from same issue past experience…) the root problem is that your batteries are near dead, yet ostensibly appearing satisfactory per voltage readout - Try as you might, wet-cells can act like this - this very situation is NOT unique or uncommon, and is a precursor to an internal cell or post connector failure.
The fact that the batteries ‘appear’ satisfactory yet are not (“say it ain’t so”!!) is from my perspective the true source of your dreaded frustration…JMHO
3 tons
This would certainly be the easiest solution, but I can't help thinking (perhaps because I'm a little out of my element on some of this) that if they were "near dead" this would/should somehow show up, at least a little bit, on either the load test or the specific gravity (both were fine)?
Specific gravity no, carbon-pile load test ‘maybe’ but not always - this is why in my previous I suggested (assuming you are slightly handy…) acquiring a clamp-on ac-dc type meter of sufficient amperage capacity (say, from HD or similar)…Note that not all clamp-on meters are dc capable, and ‘for dc’ service be sure to follow the meter’s clamp-on directional orientation instructions…Clamping it around one of the battery cables (while under load…) will tell the tale - but first try to locate jack motor amperage specs…Worse case scenario is that you’ll end up with a relatively decent meter for future use, yea!! (or maybe return it - I donno??)…
Note: the meter can also be used to determine receptive charge amps into the battery…No substitute for solid data…
3 tons
Jan-21-2023 04:42 AM
Jan-21-2023 04:05 AM
Bud
USAF Retired
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