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Power station instead of Generator for RC racing

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Power station instead of Generator for RC racing

Old 06-19-2023, 06:03 PM
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Default Power station instead of Generator for RC racing

Was wondering if anyone was using a power station instead of a generator in the pits for rc racing / charging batteries and so forth

Want to buy a Jackery powerstation to charge 4s batteries for e buggy events..wondering what size to get....500w...1000w ect

Thanks
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Old 06-19-2023, 08:24 PM
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Bigger is always better. Besides, you might wish to use it for more than just RC.
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Old 06-19-2023, 11:13 PM
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You have to calculate the available capacity and the needed capacity. Such a power station has most of the time a smaller battery that will provide you not more than 3 or 4 charges. with current batteries we use today. A simple car battery is much cheaper and can provide you more capacity.
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Old 06-20-2023, 04:58 AM
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roughly 5 years ago I used to race on-road at a parking lot and it was common for folks to bring a 12V marine grade battery to charge off DC, those style batteries are designed to be able to be drawn very low on voltage without causing damage to the battery.
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Old 06-20-2023, 08:11 AM
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Used deep cycle marine battery for many years before the track got ac power.
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Old 06-20-2023, 08:52 AM
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Ok all. I gotta do this. Get a marine deep cycle.
I was also looking at a 300-500w inverter off of amazon...? Will that do it? Ya I would need to start my car but I could sit in some AC. Lol.
D
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Old 06-20-2023, 09:05 AM
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I was about to build my own using a 54wh LiFePo4. Lots of youtube how-to’s etc. But I’m now running tire warmers, and a 900 watt blower so that killed it, plus a bunch of schlubs rely on my generator for power now. If I had a more streamlined setup then LiFePo4 would be the way to go. I’m too old to haul deep cycles around.
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Old 06-20-2023, 09:47 AM
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I used to run an inverter off my car battery, but I had to make sure and start my car every couple of hours to prevent from killing my battery... those inverters are VERY inefficient, better to run straight 12V DC to the charger than to mess with the inverter if you plan to run a full day of racing on a single charge to the deep cycle battery.
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Old 06-20-2023, 11:10 AM
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Do you have Milwaukee M18 tools? This might give you a reason to get some.


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Old 06-24-2023, 01:41 AM
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These power stations are designed to run mains powered items. 99% of RC chargers will run on a 12V supply (and will have a higher power output on 12V too). So there is no point in investing a lot of money in something that is going to do a power conversion that your charger is just going to convert back.

12V "leisure" battery is the way to go. So much cheaper.
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Old 06-29-2023, 06:18 AM
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I have alot of 6S batteries I use in my larger planes. I plug my charger into 2 of those batteries to form a 6S 10,000mah pack and can charge all day with a few spares.
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Old 07-02-2023, 05:45 AM
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Originally Posted by billdelong
roughly 5 years ago I used to race on-road at a parking lot and it was common for folks to bring a 12V marine grade battery to charge off DC, those style batteries are designed to be able to be drawn very low on voltage without causing damage to the battery.

aka Deep cycle batteries
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Old 07-14-2023, 12:21 PM
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The issue with the Jackery's and similar devices is the 12v DC output is typically limited to 10 amps through a cigarette lighter style plug. This means you are limited to about 120 watts of charging power. Using the AC outputs makes very little sense as your charger is most likely DC, so converting DC from the battery in the Jackery to AC power so you can plug in a AC-DC power supply to run your charger on DC power is a convoluted and inefficient way to accomplish this. A 12-volt battery is much less complicated and for the given amount of energy stored will be much less expensive. "Deep Cycle" sealed lead acid batteries, typically touted for marine and RV use, are still only designed for 50% DOD (Depth of Discharge). You can discharge them further, but the number of cycles drops pretty dramatically the further below 50% DOD you go and the more often you do it. That means if you have a typical group 24 sized battery, you are getting about 45AH worth of useable capacity. The nominal voltage of a lead acid battery is 12 volts, so this equates to (12v x 45AH) 540 Watt Hours. A 4s 6,000 MAH battery has a nominal voltage of 14.8v, so (14.8v x 6AH) = 88.8 watt hours from dead to full charge. I'd add another 10% on top for inefficiencies in the charger This gives you a good idea of how much power you need/how many charging cycles you can expect out of given battery. If it were me, I'd be looking at a 50AH or 100AH LiFePo4 battery as they are much lighter than lead acid, typically has minimum 3x the cycling capability of a lead acid battery, can be discharged much deeper with less of an impact to cycle count than lead acid and can be recharged much faster than lead acid. You do pay premium for all that. A typical 85 AH sealed marine lead acid battery is around $80-$100. A 100AH Lithium is going to set you back about 3 times that, but it's still cheaper than everything but the smallest Jackery units. If you need AC power, you can always buy a small and inexpensive inverter that the battery can run.
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Old 07-14-2023, 01:34 PM
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I'll stick with my 1000 watt Jackery, and 100 watt solar panel. It's less cumbersome then hauling a deepcycle battery around, (been there, done that). So far, racing two offroad classes, I've only had to pay to charge the Jackery at the beginning of the season. The solar panel has been keeping it topped off.
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Old 07-20-2023, 08:43 AM
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Originally Posted by Mac The Knife
I'll stick with my 1000 watt Jackery, and 100 watt solar panel. It's less cumbersome then hauling a deepcycle battery around, (been there, done that). So far, racing two offroad classes, I've only had to pay to charge the Jackery at the beginning of the season. The solar panel has been keeping it topped off.
What makes a single deep cycle more cumbersome than a jackery and solar panels? The weight?
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Last edited by mrreet2001; 07-20-2023 at 11:06 AM.
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