PL8X2 max charging questions

[Tachead]

Hey guys, I am looking at getting a PL8X2 and am wondering about my best options for a power supply. I am looking at the Meanwell RSP series. Namely the RSP-1000-24,RSP-1500-24, RSP-2000-24, and RSP-2000-48. I would like to charge 4x6S 3300mah lipos per side at 2C. So 8x6S 3300mah total at 2C. How much juice do I need? Will going to 48V be worth it? I would like to run both input leads off the same PS but, would run 2 PS's if necessary. What would be the advantage of 48V? I plan on running the setup off 110V/15amp most of the time. Will I need to upgrade to a 20amp breaker to achieve the charge rates I outlined? I ask because the RSP-2000 series requires 20amps to achieve its full potential but will pump out 1600watts off of a 15amp breaker. Thanks guys.

[Gregor99]

We are talking about the Dual Powerlab and not PL8s? You would be using about 665 watts per side (output). That would be pulling about 30-32 amps from the supply at 24v per channel. On the input side, it would be just under 1500 watts.

If you stick to 24v, you won't be able to max out either channel. But you would be able to max out the supply and the breaker. Also if you stick to 24v I would recommend taking the extra steps to bump the supply voltage to the max it will operate with to avoid the buck boost transitions. Or you could go straight to 48v and not worry about them at all, while lowering your input current levels.

[Tachead]

Yes, the PL8X2. Thanks for the info. So, I am thinking the RSP-2000 is the way to go. It is the same price for 24 or 48V. The 24V is rated at 80amps continuous where the 48V is rated at 42amps. Which would be the best match for the X2? I'm guessing the 48V because it is much further away from a 6S lipos voltage. Also, is there any disadvantage of running the X2's two input power leads off a single PS vs 2 separate ones like 2xRSP-1000's? Thanks again.

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[Gregor99]

The wattage of the two supplies is very close. As the voltage goes up the current goes down. So the 48v supply will have roughly have the current for the same wattage. Here are more detailed specs for both supplies.

http://www.meanwell.com/search/RSP-2...-2000-spec.pdf

With regard to the DPL, it has an input current limit of 40 amps. If you are charging 6s packs with 24v you will hit the input current limit before you max out a each channel. It will be about 36 amps vs the full 40 amps. This may be non-issue as you will not be able to max out both channels on 6s at the same time with either supply. Also note that you cannot max out both channels on 6s at the same time from a 15 amp breaker. Regardless even running off a 15 amp breaker its a lot of power available to the packs.

There is a slight technical advantage running each channel off of its own supply. The charger will periodically pause the charge to take readings. These pauses give the the supplies voltage regulator quite a workout. If there are two chargers pulsing the supply it can be hard for the voltage regulator to keep up. On lesser supplies it will likely trigger an unstable safety code on one of the channels. I don't think that will be an issue for the Meanwell. There is a secondary issue I'm currently investigating that could result in a more stable supply voltage running both channels from single supply, only when a generator is used. If that turns out to be the case, I'll update my guidance based on the test results.

[Tachead]

Ok thanks man. So, tell me what you would buy for the X2? I would like to keep the price of the PS/PS's around $450-550. I am thinking either 1xMeanwell RSP-2000-48 or 2xJunsi 1200watt 24V supplies. Other options are welcome too. Thanks again.

[satgod]

Originally Posted by Tachead

Hey guys, I am looking at getting a PL8X2 and am wondering about my best options for a power supply. I am looking at the Meanwell RSP series. Namely the RSP-1000-24,RSP-1500-24, RSP-2000-24, and RSP-2000-48. I would like to charge 4x6S 3300mah lipos per side at 2C. So 8x6S 3300mah total at 2C. How much juice do I need? Will going to 48V be worth it? I would like to run both input leads off the same PS but, would run 2 PS's if necessary. What would be the advantage of 48V? I plan on running the setup off 110V/15amp most of the time. Will I need to upgrade to a 20amp breaker to achieve the charge rates I outlined? I ask because the RSP-2000 series requires 20amps to achieve its full potential but will pump out 1600watts off of a 15amp breaker. Thanks guys.

i'm not sure what your goal here is but I charge 6 6s 3300 packs on my pl-8 in about 16
your only doing 2c so you should have no problem doing that with 1 24v supply
or simply get the pl-8 charge 6 packs and then charge the last 2 seperate and save yourself on the bigger charger and the 48v supply

[Tachead]

Originally Posted by satgod

i'm not sure what your goal here is but I charge 6 6s 3300 packs on my pl-8 in about 16
your only doing 2c so you should have no problem doing that with 1 24v supply
or simply get the pl-8 charge 6 packs and then charge the last 2 seperate and save yourself on the bigger charger and the 48v supply

I plan on charging 2C minimum but up to 4C. I will be charging 8 packs at once. 4 per side. I also plan on getting a 700 in the future so will be charging multiple 6S 5000's too. I figure it is smart to plan for the future as I don't want to have to upgrade for a long time.

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