Latest source for good lipo batts

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Re: Latest source for good lipo batts

PostPosted: Wed Jul 22, 2020 3:42 pm

dhooks wrote:
c/f wrote:I've used graphens but dont shop labels, I only shop weight so using graphenes of the same weight as its counterpart I also find cooler temps at shorter flight time, I will buy them on sales, versus at a premium cost,

Revlectrix out of singapore has some bargain sales pricing at times.



Revo is the only one of the graphene offerings that seem to be hit or miss, so be careful. And I got bit on their advertised weight before, was way off from reality.


An sales are only way to buy bats, if I see a size I use on sale I try to get it, they last a long time if you never hit them with that first cycle. But I save a tremendous amount by doing this

What do you mean if you don’t hit them with first cycle?
I’ve been noticing some times my batteries last and sometimes go to junk very fast but I over may have over discharged them.
When I raced off-road using NiCads and NiMh matched packs we used special discharge devices.
Tail lights in series for load and when a certain voltage hit it shut off and that kept high discharge memory intact but LiPo I don’t know how to discharge and store.Many different theories.
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Re: Latest source for good lipo batts

PostPosted: Tue Jul 28, 2020 9:41 pm

What I generally see is bargain lipos will have voltages per cell that are not all the same, I'm anal to the third decimal place.
So for the first half dozen charge/discharge cycles I will fly with mixed throttle settings and around 50% of amapacity usage.
I refer this as a breakin BEST PRACTICE. You will see that the per cell volts tend to get closer to each other wether charging or discharged resting volts with this practice. Thats all

High dollar packs dont guarantee you can crush them with discharges near 3V per cell. Timers and volt alarms are dicey based on flying style repeatability. I have convinced myself that using an ESC with Capacity warning is the ticket. I am using Graupner radios with Graupner ESC +T.
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Re: Latest source for good lipo batts

PostPosted: Wed Jul 29, 2020 12:10 am

I’ll have to give that a try and will try setting my telemetry volt/cell alarm set to a higher voltage than 3.0 and there are some that read amp draw too that may be helpful.
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Re: Latest source for good lipo batts

PostPosted: Wed Jul 29, 2020 6:01 am

3dfoamyfan wrote:
dhooks wrote:
c/f wrote:I've used graphens but dont shop labels, I only shop weight so using graphenes of the same weight as its counterpart I also find cooler temps at shorter flight time, I will buy them on sales, versus at a premium cost,

Revlectrix out of singapore has some bargain sales pricing at times.



Revo is the only one of the graphene offerings that seem to be hit or miss, so be careful. And I got bit on their advertised weight before, was way off from reality.


An sales are only way to buy bats, if I see a size I use on sale I try to get it, they last a long time if you never hit them with that first cycle. But I save a tremendous amount by doing this

What do you mean if you don’t hit them with first cycle?
I’ve been noticing some times my batteries last and sometimes go to junk very fast but I over may have over discharged them.
When I raced off-road using NiCads and NiMh matched packs we used special discharge devices.
Tail lights in series for load and when a certain voltage hit it shut off and that kept high discharge memory intact but LiPo I don’t know how to discharge and store.Many different theories.


It's been a while since I read up on the details but in short, once you start the charge /discharge cycles it starts a clock ticking .
Hi my name is DorkitDan, may I fly your plane please ;)
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Re: Latest source for good lipo batts

PostPosted: Wed Jul 29, 2020 6:37 am

I was using the GForce from Value Hobby but have since gone to the Zippy Compacts from Hobby King.

With the last sets I purchased, the weights are very close between packs.
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Re: Latest source for good lipo batts

PostPosted: Sat Aug 08, 2020 9:40 pm

I’m trying ChinaHobbyLine orange 70C packs and they are above average.
First few charges 96-97% capacity then 100% filled.
Some of the best packs I’ve had in quite a while and price is budget cost.
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Re: Latest source for good lipo batts

PostPosted: Sun Aug 09, 2020 1:02 pm

Gen Ace and Tattu and Pulse are true to their ratings and the same every time you get one . Turnigy Graphines kicks but too . Just note they are larger than a true c-rated regular lipo of the same specs .

I quit buying lipos from Value Hobby years ago and never looked back . They sold me the same packs that are different sizes by measurement several times . I also have seen two of the same packs with different c ratings and the only difference was wire size . I got packs with no shrink wrap . They are constantly rebranding different vendors and you dont know what your getting .
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