Chargers In Series

smkettner wrote:
You have it right. And if you connect the other three chargers in series you will have 3 amps and just 3 to 4 hours to charge. Trust the math.

Thanks ! Wow, I'm happy w/ overnite, let alone 6 hrs, I guess that's why higher voltage is better.

I'll forget those other chargers, while they are still healthy :)

You have it right. And if you connect the other three chargers in series you will have 3 amps and just 3 to 4 hours to charge. Trust the math.

Quote:
1.5 amps at 36v is "worth" more than 1.5 amps at 12v so you don't lose anything and will gain the convenience
--------------------------------------------------------------
This post is starting to be worth more than I at first thought.

I at first thought I would be charging a 54 AH bank (18x3) w/ a 1.5 amp charger, which could take 18 hrs if depleted 50%.(54ah div x 2 div x 1.5 = 18hrs)
But now I realize that connected in series, it is only an 18 AH bank, being charged by a 1.5 amp 36v charger. So, 18ah div x 2 div x 1.5 = only 6 hrs.

I'm thinking something is not right.
In reality, how long is it really going to take to charge these 3 18ah batts in series, using a 1.5a 36v charger, and batts discharged 50%.

Thanks for the "meantal" help :).

RJsfishin wrote:
Ok, forget the idea. I'd forgot that the amps don't add up, so nothing to gain even if it did work, and it probably won't work anyway.

That's the way I'm doing it now, 3 separate chargers on the 3 12v batts that make the 36 volts, but its a pain to get at all the batteries.

I just got a new 36v charger, but it turned out to be 1.5 amp, instead of the 3.1 amps as advertised. And for $11.89, I'll make it work I guess, being as I have more time than money :)

1.5 amps at 36v is "worth" more than 1.5 amps at 12v so you don't lose anything and will gain the convenience.

Smk is suggesting put the three-part "36" in parallel with the real 36 and get 3 amps at 36 for fast charging that scooter.

Or just make it a solar scooter :)

https://www.youtube.com/watch?v=DxhzSCa-PVs

Use an ORDINARY charger a 10-amp charger.

Purchase a 600-watt DC/DC booster on AMAZON.

Screwdriver adjust the pot to 44-volts

You got you a REGULATED charger for 36-volts.

Tweak the cermet pot back to 40.5 for floating.

EZer than making a mud pie.

Naio wrote:
So, how do you hook up chargers in series...Just clip them onto the same terminal?

Clip the - of one charger's connector to the + of the other(s). Clip remaining - and + to batteries.

Just the same as a solar panel.

You guys confusing me now !
But yes, I modified a 24v scooter to 36v, runs about 25 now.It has 3 18 AH batteries. I got it in Quartzsite,... Fun.

So, how do you hook up chargers in series or parallel? Just clip them onto the same terminal? Or rewire them?

My 3-output charger specifically says it's ok to put multiple outputs on the same terminal. But can I do that with different chargers? Some set to AGM output and some wet-only?

So stack the three in series and run parallel with the new $12 charger.
There now you are all set with 3 amps charging. :B

Ok, forget the idea. I'd forgot that the amps don't add up, so nothing to gain even if it did work, and it probably won't work anyway.

That's the way I'm doing it now, 3 separate chargers on the 3 12v batts that make the 36 volts, but its a pain to get at all the batteries.

I just got a new 36v charger, but it turned out to be 1.5 amp, instead of the 3.1 amps as advertised. And for $11.89, I'll make it work I guess, being as I have more time than money :)