How To Wire Two Power Supplies in Series

In this video, I try to take a step-by-step instructional to wiring up two power supplies in series so that you can double your voltage output.
The wiring is fairly straight forward but with all things electrical, you want to be extra careful and not let anything touch that shouldn't or it might short out your power supply.
By wiring these two power supplies in series, I took two 60v / 20a power supplies and turned them into a 120v / 20a power supply for powering my delta pro from an external battery bank with a Calpha Solar 5KW controller/inverter. This results in maxing out the input of the Delta Pro at 1,600w! The holy grail. :)
amzn.to/44kS6qB - 60v / 20a 1200w power supply shown in this video
amzn.to/44hmlyG - 48v / 20.8a power supply I've shown in previous videos. Slightly more affordable.
Most Powerful, beginner friendly home solar system available:
Delta Pro Ultra - amzn.to/4aQ66v5
Best Prices and Warranties on Ecoflow Refurb Units; *As an eBay Partner, I may be compensated if you make a purchase
ebay.us/BGBKvt - Ecoflow Delta Pro
ebay.us/WFhdZK -Ecoflow Delta Pro Extra Battery
ebay.us/rvuREO - Ecoflow Delta Max (2kw)
ebay.us/6TytUz - Ecoflow River 2 Max

[@ivirelu23]

Not all PSUs can be chained in series. More knowledge is required to do that without isues

[@Electronzap]

Nice, glad that worked out well. I was thinking of doing that but since they both have the same AC powering them, I was thinking that there would be a short circuit somewhere if you connect the positive of one unit to the negative of the other unit. So, I've only connected things with different power sources for each of them so far.

[@GitXxxd]

so it is possible to use separate AC inputs for each PSU.....whilst still getting them to output in series????

[@foogod4237]

Do *not* try this unless you know that the power supplies you are working with actually support it (or you know enough about electronics to know how to tell for yourself). Many DC power supply designs actually have the negative output connected to the neutral input line internally. If you try to connect those up this way, you will end up with the positive and negative both connected to neutral, shorting the outputs of one of the power supplies, at best causing it to just shutdown, and at worst actually damaging it in the process.

[@tlteal]

For those of us with the Delta Pro's and the Smart home panel, it really limits us down to the XT60i cables via solar and/or other power input which is very unfortunate. I can't help but wonder if there's an XT60i splitter for when there's no solar you can get power directly from an external source like a 48v battery?

[@chriskalisiak5005]

Sounds like you probably could have a splitter with a blocking diode on the 48V battery. Have to make sure the diode is rated for the current, but this job is what a blocking diode is for. I have yet to hook up my external 48V battery array to my 2*DP+SHP, but that's how I'm going to approach it.

[@gothesouthway]

Wisdom: With a fixed resistive load doubling the voltage doesn't double the power(wattage) it quadruples it. charging batteries or running motors have variable impedance, so doubling voltage may draw more power than expected. keep in mind this power must be dissipated as work and inefficiencies usually ends up as heat. Make sure you load can dissipate this additional heat or it may cause fire and/or failure of your load. (good practice to use thermal fuses or electronic circuitry to cut power to the load during overheating.)

[@repairman2be250]

Voltage + voltage = more voltage, power is the same - your case 20A. Don't connect bare wire, use ring terminal, spade terminal or ferules.

[@joec9986]

Dan quick question running a ham amplifier that has a red and black wire where do you hook those up to

[@DanielGoodwin-jq1oc]

If you're following this video and have wired the two power supplies in parallel you should have essentially made one of the supplies your negative and the other your positive. The black wire should go to the negative supply and the red to your positive supply. Always best to double check your voltage with a multimeter first before hooking up anything to them to make sure its appropriate. Best of luck!

[@imRosco69]

Thanks, Daniel. I want to do the same for my DP. It looks ezpz. Great video.

[@imRosco69]

Can you show us how you are powering the power supply & the cable you use to connect to the DP?

[@DanielGoodwin-jq1oc]

will try to do a quick video but essentially I have a Calpha Solar 5KW Inverter connected to an external battery bank. From the inverter, I have wired just a normal 20amp outlet and have plugged in the power supplies into that outlet. The power flows from the inverter/external battery bank into the Delta Pros. You lose some efficiency by going through a switching power supply but I have 5-6kw of solar panels connected to the inverter so I'm not very concerned about the efficiency.

[@IvanJanowsky]

I am new to solar. Just purchased an Ecoflow Delta pro, extra battery, dual fuel generator and a smart panel. Next step is to purchase solar panels. I understand?, that i will only be able to wire three 400 watt panels because of voltage restrictions on the EcoFlow. Is their a method that i can wire six panels thru a limiting device to accomplish more wattage going into the Deltapro at off peak sun periods?

[@DanielGoodwin-jq1oc]

In your circumstance, you'll just need a couple of parallel branch connectors. You will wire three panels in series (assuming the VOC limit for 3 is within the DP's requirements) and wire another 3 in series and use the branch connectors to connect them in parallel. This will effectively double your wattage and in good sun should max out your DP input. If you need even more for cloudy days an hours when the sun isn't in optimal position, you can just add another array of 3 panels.

[@gjfla4741]

How are the two power supplies working since it has been a few months? Thanks.

[@DanielGoodwin-jq1oc]

They've been working flawlessly day after day. They've actually held up even better than one of the previous power supplies I was using. I've been very pleased with the result.

[@gjfla4741]

@@DanielGoodwin-jq1oc Here is a link to a dual power supply 3D printed mount. github.com/CyberGWJ/Ecoflow/tree/main/dual%20powersupply I use this to carry around the dual power supplies to charge my two Delta Pros. Regards.

[@SteveElwood-x4f]

Hi Daniel. The video is interesting and that method does work. My simple question is why not just buy a single SMPS that outputs 120VDC or higher? I bought an IdealPlusing unit that outputs 150VDC at 13.3A current. You can adjust the voltage down some if you want.

[@DanielGoodwin-jq1oc]

Good question. For me, I found it difficult to find a model that ships from a reliable source, at a good price that has a good support/return policy. With these 60v models, I got them both for around $60 each (so total of $120). They shipped via Amazon which means I had a good resource in case something was wrong with them. From AliExpress etc, its much more difficult to get support if something is wrong. I actually did order a single 2000W supply from a different supplier and was hoping to do a video on that but it started smoking within 10 minutes of connecting it!!! With these in series, so far (and this is only after about 2 weeks) they have been very reliable and stable.

[@andrewdemus]

I have 2 DP's and I bought 4 of the bosytro 60v 16.6 amp models for $39 each,series connect two to each dp and they run fine,just one 120v model is around $179,hope this helps👊

[@Spiderbulit]

I would like to know what the CC trimmer is for beside the voltage. Do you have any idea?

[@DanielGoodwin-jq1oc]

I'm pretty sure that is the current adjustment. There is a voltage adjustment and a current adjustment (amperage). You can make modest adjustments to either up to the maximum of the supply. Although I don't know this for sure, it would seem logical if you run either higher, it may result in a shorter lifespan of the power supply.