What you want is a lead-acid battery charger that works over the voltage range of your traction battery, not a DC-DC converter.
I was wondering about that... would it matter ? His traction pack won't drop the voltage even when the charge controller is pulling maximum current.I'n not sure he wants one with MPPT...unless MPPT can be shut off.
I actually picked one of these up, but the Ebay listing specifically said not to use it to charge batteries. I assume because there's no current limiting so the 12V battery would just eat current until the converter let the magic smoke out. If there's an easy way to limit current I wouldn't mind using that.This is all you need! is only $30 and is normally used in golf carts.
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Would you mind expanding on this a bit? Electrically speaking I'm not sure I understand the difference between a DC-DC converter and a battery chargerAnd the battery will sulphate and die early...because it is not a battery charger.
Lead-Acid battery charger has multiple stages in the charge cycle with different voltages to maximize the life of the battery. A solar charge controller will have the same capability.Would you mind expanding on this a bit? Electrically speaking I'm not sure I understand the difference between a DC-DC converter and a battery charger
Teslas batteries do only last 2 years, so yea, pretty shitty, but are you really gonna go thru all that trouble so that the battery can last an extra year? if you are lucky !?Teslas go through 12V batteries like $hit through a goose -- bad example of how it's done.
My GMC goes dead regularly. One run of a few dozen miles on the alternator and the battery is rejuvinated for weeks.
Whether the accessories run off the charger or the battery is a matter of bean counting. Put a black box around it and it all runs off the HV battery.
So, how do you propose he connects everything, and what are the parts he needs to buy in order to get this done? could you post some links on products and how to connect them properly?What trouble?
Pick the one that cares for the battery up front is my point, and it's not Tesla, and it's not a xV-12V dc-dc off Alibaba.
Yes, you'll power 12V stuff, but a battery is ~$120, which is 4000 miles' worth of electricity 😛
My car batteries last 5-7 years. The Bolt EV 12V battery is a champ at 3 years old right now. The GMC regularly discharges below 8V (lack of use and vampire power...I run the truck once every month or two) and is on its 3rd year, also - but its battery was procured used.
The last battery in the frickin' Model X lasted a bit over a year.