48V float charger for Lead Acid with temperature compensation?

[wpns]

I've got a couple of neighbors requesting recommendations on float chargers for their 48V golf carts, which tend to have six Trojan T875 or four T1275 or six T105/T145 batteries, which they leave alone for months (up to six months at a time) when they are off-island.

Club Car 48V systems will wake up every 2 weeks and top off their charge and do an equalizing taper charge, but it's not enough, even after a couple of months you have to charge them, run. little, charge them again, and basically exercise them back into full operation.

What's a good 120V lead-acid charger with temperature compensation (they are closed up in garages or sheds all summer in the tropics, and the usual BatteryTender https://www.batterytender.com/products/powerplus-48v is pricey and probably overkill.

I suppose a Victron SCC with an external power supply would work, but then there's the selection, sourcing, integration, etc.

This https://www.amazon.com/Battery-Charger-Trickle-Lithium-Lead-Acid/dp/B0BZY7YDJC would appear to be about right, but gets really poor reviews and is a frequently returned item.

Are there other options I haven't thought of?

Thanks!

 

[dopeassjackson]

Be careful of cheap chargers as they can boil off all the water...then your left with shot batteries and still need to buy a better charger.

 

[Vigo]

If you're just trying to keep it floating at a certain voltage just get an adjustable 0-60v power supply and set it how you want it. If you want it to do periodic 'equalizations' then you'll need to put a charge controller (that can be programmed for such) between the power supply and the battery and set the power supply to a higher voltage. Done the absolute cheapest way this could still be a ~$50 solution even with buying both power supply and charge controller.