Home Forums Hunting & Shooting Hunter's Campfire Car battery question, sort of

I had a new factory battery in my 2018 4Runner. If I let the lights on a bit, it wouldn't start, so I got a new walmart battery. 4Runner never hiccuped since 2019.
I charge the original 4runner battery and run a 40 gallon 3 pt sprayer on my Kubota. I know I ran it 6 hours without a charge. I use the same battery for my clay pigeon thrower. No issues.
Good way to use a "junk" battery.

LiFEPos have been coming down in price a lot. I looked at one brand for my bass boat a year ago and it was $1000. Today, it's $700.

One major advantage for your sprayer application is weight. A car battery or a deepcycle of the car size can weigh 50-60 pounds. The one Swifty linked to weighs less than three. A car-sized lithium weighs about 30.

AS standard charger won't fully charge a Li battery. It needs 14.4 to 14.6V for a full charge and standard chargers only get up to about 13.8.
Pulling a deep cycle down below 50% over and over will damage it. A Li battery can be discharged down to about 5% repeatedly without damage. So, you can get nearly twice the run time from the same size of Li. Of course it'll take twice as long re recharge.

Great value at $94 https://www.walmart.com/ip/EverStar...roup-Size-27DC-12-Volt-750-MCA/164242687

Everstart is another one made by Johnson Controls, as are 50% of the batteries sold in the US. They're good batteries for the money.

Lithium's only real advantage is weight savings. A battery that can be discharged down to 5% isn't much good if your appliance shuts off at 10.8 volts as most of them do. Lithiums are fussy about temperature and charging profile and expensive. Seems like an auxiliary outlet tied into the engine battery would be ideal since power is only required while running. 10 gauge wire more than adequate, fused. I use 6 volt golf cart batteries in series for off grid camper. Relay or battery switch to engine battery. Overkill for this application but much cheaper than Lithium and comparable AGM.

I disagree.

Standard Li ion batteries do have much reduced voltage toward the end of their discharge. LiFePO4 batteries have a much flatter voltage curve, more like lead acid.

LiFePO4 batteries can take far more charge/discharge cycles than lead acid. Per cycle, they are cheaper.

They are not any more fussy than any other battery. You do have to get the right charger, but those are cheap on eBay.

I sure hope they're not still selling batteries made by JCI.

Bought one of those 25 gallon sprayers that you pull behind a 4 wheeler.
Hooked it right to the battery of my 4 wheeler.
Sprayed 80 acres without a hitch!

I'd say yes, but a deep cycle boat battery would be my first choice. They will run a trolling motor quite a while.

I wish I could buy cheap batteries for my 48 volt sporting clays cart. Just had it re-done....but it gets used daily on the farm, real handy.

I’ve done this for many years with no ill effects.

If it's in the back of the pickup plug it into the power in the trailer plug, or provide a deep cycle battery and hook a charging wire to the battery.
On the atv/utv it would work the same as well.

If you want to give yourself some flexibility, put a solar panel charger and an rv battery on the same skid. It will keep it charged while sitting, and help charge while in use.

Same here. Most sprayers that size will have a 2.2 gph pump. The ATV or garden tractor battery will power it just fine as long as you keep the engine running.

A cheap deep cycle battery from Wally World or your farm store would be just the ticket . Charge it up between use

Assuming you have a 7 pole connector on your P/U and UTV for when you pull a trailer. Why not just use something like this: Link

and use a little 4 pole flat connector on your pump using just 2 poles +/-, forget the battery all together. Hell wire it so you can start and stop it with the other 2 poles or with the head lights...

Phil

Im the OP and just bought a deep cycle marine battery and charger.
Thanks guys for all the advice.

I disagree.

Standard Li ion batteries do have much reduced voltage toward the end of their discharge. LiFePO4 batteries have a much flatter voltage curve, more like lead acid.

Therefore: no advantage over cheaper alternative?

LiFePO4 batteries can take far more charge/discharge cycles than lead acid. Per cycle, they are cheaper.

If that theory were true would not golf courses have switched over to lithium long ago? Floor sweepers? Man lifts? Temporary traffic signs and lighting?

They are not any more fussy than any other battery. You do have to get the right charger, but those are cheap on eBay.[/quote]

Is this not an additional expense for special charger? The cold weather limitations may not apply here, but it's another negative. Lithium is more mystic and $Gucci than anything practical, in my view, which is admittedly stingy.

A lot of golf cart owners have gone to Li. Gold courses haven't because they have huge money invested in carts and converting them is even more costly. They'd have to lay out big bucks for batteries, chargers, etc.

You were wrong


AGAIN

LOL