Power Supplies ?

[steve28]

Whats a good affordable 12 volt power supply I can get to run all my chargers for my lipos I need to handle my AstroFlight charger, charging 6S1P at 1C so lets say 5 - 10 amps .

[Steve Rogers]

One thing to keep in mind when choosing a supply is from what I've experienced as the voltage goes up on the packs the amp draw from the supply goes up as well. For instance charging a 6s1p 4900 at 1C (4.9 amps) when it reaches full current in the charge it is actually drawing around 10 amps from the supply. With the 3 cell packs what you charge at is pretty much what you draw. I have a 15 amp Radio Shack power supply for each of my chargers & so far I havent taxed them beyond there capability.
Good luck in what you choose!

[Skiddz]

http://www.mpja.com has some pretty decent single output switching power supplies. I use one of their 12V 12.5A supplies with my 1010C and my Trident both hooked up at the same time. I can charge a 6S pack on the 1010 at 5A and a 3S pack on the Triton at 2.2A with this thing. I did have to add a small brushless fan to the PS 'cuz the thermal cutoff was kicking in on warm days. No problems since.

[dfrazier]

I am buying this one. http://store.solar-electric.com/ioten55amp12.html

[E2C_Mech]

Here is a formula to compute general power supply requirements for a 6-cell Lipo pack charging at 5 amps. You can change out the number of cells or charge current to fit your requirements:

3.7V x 6Cell x 5A x 120% / 12V = 11.1 Amps

[Probedude]

Here is a formula to compute general power supply requirements for a 6-cell Lipo pack charging at 5 amps. You can change out the number of cells or charge current to fit your requirements:

3.7V x 6Cell x 5A x 120% / 12V = 11.1 Amps

Close, it's 4.2V/cell at the end of the charge.

(4.2V * 6 * 5 * 1.2)/12V = 12.6A.

For others, the 120% is allowing for an 80% power conversion efficiency for the charger.

[Pinecone]

And my chargers are more efficient than that, but it is a good safe rule of thumb.

[EBCooper]

Competition Electronics, go to their website. 22 amp PS for around $120.00. Top quality and small. I have one and it works perfect.

[E2C_Mech]

Close, it's 4.2V/cell at the end of the charge.

Probedude - My Bad! My new puppy has his[quote]days and nights mixed up. I need to get a good nights sleep. :glasses2:

[E2C_Mech]

Here's a plug for Hobby Lobby

www.hobby-lobby.com

NEW! 20 Amp Power Supply

HW1220 "Power Force" 20 Amp Power Supply ..... $ 58.90
IN STOCK
7-1/2" x 6-3/4" x 3-1/4". Plug into your 110-120V AC house current, then connect up to three 12V DC field chargers. Converts 110-120V AC power into clean 12V DC power. Converter will handle currents up to 20 Amps. A pre-installed grounded AC power cord is included as well as output terminals that accept banana plugs. On/Off switch with LED power indicator on front panel.

[Probedude]

My Bad! My new puppy has his[quote]days and nights mixed up. I need to get a good nights sleep. :glasses2:


You too!!! My daughter is turning 8 on the 24th and we've been promising her a puppy for the last 2 years. Finally made good on it.

My 70 pound Chow is still trying to figure out what this black 3 pound puff is that's running around the house!

[FearNot]

Use an old ATX power supply. Instructions on how to mod it are everywhere. It works great and is virtually free :mrgreen:

Matt

[ChasHeliCop]

I bought a Ripmax Pro-Peak, 13.8v Dual output 0-20A