Paralleling Batteries

Batteries, Chargers, and Battery Management Systems.
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TheSiege   100 W

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Paralleling Batteries

Post by TheSiege » Apr 07 2021 2:33pm

I want to parallel these batterieshttps://batteryhookup.com/products/gree ... 5475675298 there is a 14AWG coming off of them.

48v15ah I will be connecting them to a 1500w motor. I am trying to think of the best way to accomplish this. I plan on connecting them a #6 wire to an anderson connector since thats the existing connector already there. It will probably be 4 packs total. I am struggling to find the best way to accomplish this safely. I need some sort of terminal strip and/or connectors. Any thoughts?

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flippy   10 MW

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Re: Paralleling Batteries

Post by flippy » Apr 07 2021 6:18pm

Grab a bunch of anderson 75 plugs and make a couple Y connectors and replace the connector on the battery and bike with anderson 75. Its slighty overkill but its reliable and durable.

Ps, buy ORIGINAL andersons, not the fake ebay ones. For bonus points also get the rubber boots to prevent water and crap from getting in. Or use sillicone to seal it up if you are a all-weather driver.
Lithium beats liquid dinosaurs.

TheSiege   100 W

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Re: Paralleling Batteries

Post by TheSiege » Apr 08 2021 2:01pm


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flippy   10 MW

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Re: Paralleling Batteries

Post by flippy » Apr 08 2021 4:36pm

TheSiege wrote:
Apr 08 2021 2:01pm
What are your thoughts on this?

https://powerwerx.com/75amp-input-4-pos ... tion-block
i dont like them. too fragile. the "real" anderson SB connectors are meant to be abused. these things break if you look at them sideways.
Lithium beats liquid dinosaurs.

markz   100 GW

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Re: Paralleling Batteries

Post by markz » Apr 09 2021 12:42am

I like these, but not the most durable, XT90.
https://hobbyking.com/en_us/nylonxt90co ... tore=en_us

SB's are good and durable.
https://www.andersonpower.com/us/en/res ... sPage.html

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flippy   10 MW

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Re: Paralleling Batteries

Post by flippy » Apr 09 2021 2:13am

the XT90's get HOT. they can handle realistically 40amps in summer (think 80+ freedoms or 30ish metrics) but they are litteral little space heaters when you get above 30 amps or so.

the andersons are designed to do 75A without even getting warm.
Lithium beats liquid dinosaurs.

fatty   1 kW

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Re: Paralleling Batteries

Post by fatty » Apr 09 2021 9:51pm

Another vote for Anderson SBs -- the standard by which to compare all other high power connectors.
Don't take advice from:
there is no difference between a mean well CC/CV power supply and a device sold as a charger. they operate in EXACTLY the same way
Testing has demonstrated that ordinary rim brakes thermally outperformed all but the best disc brakes...You'll always add weight and cost, while not equalling the capabilities of comparable rim brakes, if you use discs

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