How many watts do i need?

[chrisleematt21]

I want to charge 12 x 6s 5000s on my 2 x PL8s, I believe the chargers are rated at 1000w each. I have a 2400w psu. What kw geny would I need to power it all? Would 2.6kw be enough?

[Guest]

Depends on how efficient the PSU is but looks a reasonable choice to get 40a out of each charger. You'll be operating the geny at full load. My 1000/900 cont runs maxed out at 30a but seems happy at that just chugging away. 3000/2600 cont should be fine.

MJ

[10x]

The title of the post reminds me of this sketch.....
https://www.youtube.com/watch?v=dSINO6MKtco

[cjm180]

It's worth buying something like this:

https://www.amazon.co.uk/gp/aw/d/B00...s=energy+meter

then when you run your setup from home, this will tell you how many watts u r pulling from the wall. Then you can see what generator size u need

I have just gone thru this exercise myself. I found a difference between what I thought and was actually happening. Like what's been said is efficiency. But with this meter you get a direct read out.

Just going ring a little further, depending on your application, I found it more cost effective to have fewer packs and charge more often. I have 5 pairs of packs for my 600. As soon as three are spent I put them on charge. The. Use the other two. Then when the three are done I fly those while the other two are charging. And so on.

Sure re it's more cycles on the packs, but you can get away with a smaller (cheaper) generator etc. i can charge those three sets (6x 6s 3.3) in 20 mins.

I run a eu20i that's rated for 1600w

[cjm180]

I have made a little spreadsheet that gives estimated values. It's not exact but it works for me within 100w on the meter.

Charging all 12 5000w 6s packs at:

1c = 1662w at the wall
1.5c = 2418w
2c = 3174w
2.5c = 3930w
3c = 4686w

my spreadsheet for rough guidance.

If if you message me I can send it over

[Ross Northcott]

Don't forget to also buy a set of sack trucks to move a Hyundai 2kv or higher as they weigh a ton, especially the auto start one's

[cjm180]

Yes, mine is around 24kg fueled. It's not a lot but by the time u have lifted in and out the boot it gets heavy

[chrisleematt21]

Lol the one im using atm 80kg, and its a bit awkward to get in and out of the van. 30kg will be fine.

[bigSi66]

If your chargers take 24v go that way as it makes one hell of a difference to what power they need
I have 2 X Hyperion 0720I Duo built in to a case powered by 2 psu`s and I stick a 3rd in the side so that's 3 chargers with 6x 6s 5000 packs at 1c and its pulling only 32amps yet when I did the same and it was just a 12v power supply it was drawing close to 50 amps as the inverters in the chargers were working way harder
I have had 4 chargers doing 8 packs and been less than 45amps in total
dread to think what that lot would all be on just a 12v
I have a Honda 2kv and it dose the job just fine
at the club we have a 2.6 kv kipor
I fly all day a mix of fixed wing and heli
both use 2x 6s 5000 packs
one an EF Edge with a Hacker Q80 and a Trex 700 and I get the same flight times and haven't had a time when I could not fly because I was waiting for packs
have 4 for the 700 and 6 packs for the Edge
but you really should go 24v if your chargers will allow

[chrisleematt21]

The PSU is 24v

[chrisleematt21]

The hyundai 3000sei does the job nicely and not too noisy although not as quite as I was expecting.

[bigSi66]

The PSU is 24v

Then you should not have any issues charging that lot
Happy Days :-)

[cjm180]

Nice one bud. I was gonna say I bought my Honda from just generators same as you. First class service. They also reassured me it would be more reliable than a mclaren