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Is this safe to do with LiPo batteries?

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Old 01-01-2019, 02:10 PM
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kushy04
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Default Is this safe to do with LiPo batteries?

Hi all, I'm new to the forums and this is my very first post, before I ask my question, I'll take a minute to quickly introduce myself. I live and work in Philadelphia as an Actuary, I've a good bit of hobby experience with programming and circuitry in regards to robotics. I've always enjoyed RC toys, my passion with them started as a kid with wireless RC cars. I've owned nitro powered RC cars, various electric drifting cars, and eventually it led my interest into flying RC Helicopters, airplanes, ornithocopters (bird like flying machines), and now quadcopters. I just bought "Eachine Wizard X220S FPV Racer RC Drone Omnibus F4 5.8G 40CH 30A Dshot600 800TVL Flysky FS-i6X RTF", FPV goggles, extra 5S batteries, and chargers.

This will be my first time flying via FPV, I tried flying an AR Drone via FPV but it ended in a disaster, I think the goggles are really needed. Ok, so now this leads me to my first question for you RC gurus out there (teach me your ways!). I've not much experience playing with LiPo batteries other than charging and discharging them through use and I am wondering, is it safe to connect two LiPo batteries in parallel to double the amp-hours because I think the quadcopter I bought is able to easily lift two 5S batteries while airborne.
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Old 01-01-2019, 03:57 PM
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Yes, you can safely parallel connect 2 LiPo batteries (5s in this case) to keep the sane voltage but double capacity
Depending on what connector type your battery uses, you can buy off the shelf adapters or simply make your own.

In fact there are many “parallel charging adapter boards” that do this for charging / discharging .

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Old 01-04-2019, 04:02 PM
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I used to strap two 5000mah batts to my tarot 650 ironman in parallel
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Old 01-05-2019, 11:04 AM
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Yup, perfectly safe. I've been running my CA-10 scale truck with two 50c 5000mAh 2s lipos in parallel for a year or so and no problems whatsoever. Gives me, quite literally, several hours of runtime pulling heavy loads through soupy mud. It's great. I do set my ESC cutoff a tenth of a volt higher than I normally would for a single pack because I don't want it to over-discharge one pack without the ESC realizing, but perhaps I Don't need to: Every time I recharge them they take within 15mAh of one another and the OCV is identical each time.


It's worth noting you can buy single batteries with cells in parallel within the pack. 2s2p, 4s2p, et-al. It's an easy way to buff mAh.

Last edited by 378; 01-05-2019 at 11:06 AM.
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