battery charger case

kloner

kloner

Aerial DP
I'm gonna be building my charger case and wanted to share with you guys. this is a pair o the dell 700 watt 12 volt server power supplies modded and ran in series to make 1400 watts at 24v, around $30 invested in them. makes a 1kw charger run all of 1kw. it seems to run around 1200 watts, guess the extra is lost in efficiency and overhead. The case is a pelican clone 18"x14"x7" and costs $60 to your door. am using teak 1/4" ply from lowes cause it was there cheaper high grade stuff. the foam on top is from Hydro Turf but is just there liner for putting under HT flooring like in glass and metal boats/jet skis.


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should be finishing it up today so will keep adding pics as the day goes. there is a 9mm foam pad that goes over the wood that makes the charger and charging board sit flush with the surface. i'll be transporting the batteries in there too when were traveling. it is so heavy already
 


kloner

kloner

Aerial DP
There is massive fans in them that blow straight out the side of the case, it draws in from the top, it'll have strategic cutouts to leak enough air. I'll get more pics together, just wanted to get the thread started before i blew it off...... once somethings done it's too late to take pics along the way

Running them out in the open they never made any heat whatsoever. doing something like these http://www.progressiverc.com/cases/case-combos


 
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kloner

kloner

Aerial DP
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this would be a typical way i use my charger. of course i could do 6, it's just really hard on my trailer where i fly, 30 amp service and the airconditioner is always on and draws 12 amps. tv with sat another 5, not alot left for the charger, but i look good doin it

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kloner

kloner

Aerial DP
I'm gonna grab that parallel adapter this time. i keep screwing up, get distracted and touch the balance plug backwards. in the icharger board, it burns a trace and removes some of the jst connector pins in the board for ya

This is what i came up with. Fired it up last night, works good but i was hoping the fans would be quieter. When i gotta get-r-done, this is the ticket. if you have a 4 outlet plug, usually one side is one pole and the other side with 2 outlets is another pole. it makes it pretty much like distributing the load on both hot poles into the house, makes a 15 amp draw spread across two legs of the circuit breaker so it's only pulling 7.5 amps one side, 7.5 amps the other side.

the hydroturf foam is nice. it's a 9mm closed cell foam that cuts and sands easily

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man, i'll weigh this today carrying the lipos too, but i bet it's 30+ pounds. never realized how heavy them server ps's are.

In my opinion, this is a better way to give it power, protect the investment and to look good doing it over spending a bunch of money of some fancy pretty PS and have a loose charger floating around with a loose PS. When you goto a funfly, these are everywhere hooked up to 2000 watt generators humming along. put the generator on the opposite side of the car you are, run a extension cord to the table at the field and charge away. alot of people get a few packs and fast charger like this and fly non stop all day. I have to "go in" to charge where i fly and i run 12 packs. this is the only way i can reasonably entertain a familly and fly while on vacation with not having to babbysit packs for hours on end
 

kloner

kloner

Aerial DP
got this finished up, put the fma parallel charging board on it and here she is running 20 amps to the 4x 4s 4000mah packs at 24 volts= 480 watts. Towards the end as i scroll through the menu, the input power is how many amps it is drawing off the power supply and how much voltage is present at the input from the power supplies. Other than the noise, there little rock stars for $30 a pair to your door. Way better than $400

 
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SMP

SMP

Member
Hey Kloner,

Rcvd the two Dell power Supplies today but didnt bookmark the link you sent on how to mod em up. Could I trouble you for that link again??
 

gtranquilla

gtranquilla

RadioActive
Looks great. I have two of the same server power supplies. Are the metal PS cases insulated/isolated from each other or bolted together?


kloner said:
I'm gonna be building my charger case and wanted to share with you guys. this is a pair o the dell 700 watt 12 volt server power supplies modded and ran in series to make 1400 watts at 24v, around $30 invested in them. makes a 1kw charger run all of 1kw. it seems to run around 1200 watts, guess the extra is lost in efficiency and overhead. The case is a pelican clone 18"x14"x7" and costs $60 to your door. am using teak 1/4" ply from lowes cause it was there cheaper high grade stuff. the foam on top is from Hydro Turf but is just there liner for putting under HT flooring like in glass and metal boats/jet skis.


022%20%281024x768%29_795.jpg


i.php


should be finishing it up today so will keep adding pics as the day goes. there is a 9mm foam pad that goes over the wood that makes the charger and charging board sit flush with the surface. i'll be transporting the batteries in there too when were traveling. it is so heavy already
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