Hey all. I’d like feed back on this here battery layout. I’ve got all the pieces but want a second, third,…nth opinion before I make irreversible changes.
I’m using Basen 26650 4500mAh batts. I’ve loosely followed @namasaki earlier build. I’ll be using a ‘lightweight’ BMS for charging only. Discharging will go to The no-longer-called-VESC thingy.
Not necessarily. Low quality cells, can still sag a lot even with higher discharge rates. For example, 30Q’s have lower discharge than 25R’s, but end up sagging less in real world performance.
Are the basens low quality cells? I thought they were good. Either way, I guess we will see how this pack turns out if @sprocket12 decides to build it.
They’re, just random chinese cells. @Namasaki said flat performance was decent, with okay range, but range and sag really suffered during hills or high draw environments.
Well, I’ve researched these a bit. There was a previous version of this battery that claimed 5000mAh. Fat chance. These have been tested by mooch and still claim second place for 26650’s. The first being iJoy at a hefty price difference. Even so, Liion Warehouse too rates these high.
My tests show they are on average 4250mAh. I expected this. Also, they claim 40 amps continuous but real world reports state 30.
All in all, I can’t see where these won’t perform well. And if I recall correctly, @Namasaki was running a 2p set up. I’m running a 4p. I’ve over built on purpose. I don’t think I’ll see the sag BUT hey! I’m doing this for science . If you have real-world experience, I’d love to hear it! My last pack was an 8s1p Lipo @ 8000mAh. This will have about 17,000mAh. Should get me around 27 real-world miles!
I’ve already purchased everything and the 4-packs are nice and glued- no turning back now.
Please, by all means, share your thoughts. That’s how I learn here. This has been a great community to be a part of.
I ran the Bases 4500’s in a 10s2p pack.
Range was great on flat gound at moderate speed, 28 miles on a charge.
When doing a lot of long hills, the range was cut more than in half by voltage sag.
I believe it’s because a 60a battery is just not adequate for hill climbing no mater what cells your using.
I would be very interested in seeing how your 8s/4p pack with these cells would perform.
Sorry @Jinra. I was out of town on an extended weekend. I can’t find the shipping info at the moment but each battery is 100g. That is just over 7 lbs for the 32.
Interesting. I was hoping that going with a 4p set up would provide that extra OOMPH to power through.
Could you enlighten me further on what you mean by the higher amp battery no being a good fit? I thought you had gone back to Lipos for the higher amps in the mAh size for your board.
I don’t recall saying that.
I’ve been preaching for a long time that the higher the battery’s discharge rating, the better!
I did not find enough power with Basen cells in a 10s2p pack.
You might find enough in an 8s4p but I couldn’t say for sure.
What I will say is that IMO, no 60a battery pack is enough for big people going uphill regardless of the type of cells.
A 120a battery pack like your planning might do the trick.
18,000mAh pack is
48 x Samsung 30q button top @ $5.91/ea = $283.68
48 x Samsung 30q @ $5.18/ea = $248.64
32 x Basen IMR @ $7.26/ea = $232.32
Oh man! It’s a wash on price difference. At least on one version of the 30q. And the 30q is a tested and true battery. And at a 6p it would have seriously more amperage available.
Well, I’ll just have to see how well this performs. I obsessed on batteries for months while planning. I guess I got it stuck in my head that as a single battery, these would do well. The weight is not an issues for me, as I’ll be running this on my cruiser pintail.
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. If you have real-world experience, I’d love to hear it! My last pack was an 8s1p Lipo @ 8000mAh. This will have about 17,000mAh. Should get me around 27 real-world miles!