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  • hoverfly: Still have a couple of orange tipple batts still working,   mainly part time... ::)
    July 16, 2018, 16:42:16
  • Bad Raven: The difference being most will not deliver the power but wil not be trashed in trying!
    July 16, 2018, 16:12:57
  • Kellarly: hehe, nothing changes there then!
    July 16, 2018, 09:26:19
  • Bad Raven: Is the issue Turnigy or Turnigy Nano-Tech? I have found that mid-blue Turnigy tend to be low on their stated "C" discharge rating.
    July 16, 2018, 08:37:09
  • ched999uk: RaceDayQuads have some cheap but good batts out now. Josh B tested and stats say very good especially at price. HobbyRC have 1300mAh 4S just under £20. Not had luck with Turnigy lipos either!!
    July 15, 2018, 22:48:51
  • Reman: Just realised that I hadn't gone through my stored Li-Po's for about a month. I try to visually check them every Saturday, And prod the plugs with a multimeter about once a month. Todays seen 12 more bulging packs go out to the incinerator..... All but one was a bloody Turnigy! Part of me wan't to burn the rest now and just get a load more Tattu packs, But I've spent good money on these packs and wan't to at least get a little more use out of them. :(
    July 15, 2018, 19:54:53
  • Bad Raven: Pre MR's I used to buy a lot from J.Perkins. Their website showed all items and stock or due date, go to dealer and buy with confidence. Then they went all "lifestyle" and all the site had were pictures or people. I wasn't after people. I never bought again. Yes, you'd think they'd learn...........
    July 15, 2018, 17:51:40
  • ched999uk: Reman sounds like amazon search. I find it ok unitil you want to search by price then amazon falls apart.... You would think both companies would get it right...
    July 15, 2018, 16:54:55
  • Reman: It's strange. The original setup they had about 5 or 6 years back wasn't too bad (Except for them occasionally getting accounts hacked), But they changed it to the last one that was clunky and slow, Now they've replaced that with a flashier one that's also clunky and slow ?!?!?! Most companies learn from what they do wrong. I don't buy from HK half as much as I used to, Mainly because it takes forever to trawl through 100 pages of totally unrelated stuff while looking for something you were thinking about getting when you saw it there the previous week !!!
    July 15, 2018, 16:27:21
  • hoverfly: I don't think there is a search button on H/King. They updated the site and forgot to  relabel the search button with  Random bo##ocks..
    July 15, 2018, 09:47:35
  • Bad Raven: Agree - The Search is abysmal!!
    July 15, 2018, 08:40:52
  • Reman: I see HobbyKing's revamped their site again...... Shame they haven't made the search function work any better, Or worked out why the whole site goes slower than a pensioner in a Nissan Micra. :)
    July 15, 2018, 08:28:14
  • Reman: How thick is Google? You buy something online, Then for the next week you get targeted adds for the item you've just got?!?! That's the one item you're NOT going to be buying again at that point so it's wasted effort of there part. :)
    July 14, 2018, 08:50:51
  • DarkButterfly: ~~
    July 13, 2018, 23:56:20
  • Kellarly: as does my ability not to realise what i've already typed
    July 13, 2018, 22:25:42
  • Kellarly: Wahooo, my whoop now lives!
    July 13, 2018, 22:25:19
  • Kellarly: yay, the whoop lives!!!
    July 13, 2018, 22:18:43
  • DarkButterfly: Had to replace the battery connector
    July 12, 2018, 10:57:47
  • Kellarly: good work! what was up with it?
    July 12, 2018, 10:39:33
  • DarkButterfly: Fixed my tiny6
    July 12, 2018, 10:23:59

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Author Topic: LiPo Battery Sizing  (Read 457 times)

Offline Bad Raven

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LiPo Battery Sizing
« on: November 13, 2017, 21:07:37 »
I have been working around and using LiPo model batteries since they first became available, back when Fred Flintstone used to fly with me and borrow my gear.

There was a period in roughly 2006/7 when sizing was extremely erratic, and same make same model same capacity cells could vary by up to 5mm in any direction(s). You could order three packs and they would arrive all differently sized. This made making fitted battery bays a nightmare.

Also way back when, there was NO standard for balance connector even if the packs had one.

Well, it seems this total lack of common sense has returned!

In the last few days a friend has bought some packs which arrived with balance connectors that are not JST, and have the same number of sockets/pins regardless of 2S or 3S. (They also had no power connectors fitted, bare wire ends with shrink wrap). And I thought this disgraceful practice had ended a decade back!  :thumbdown:

I have just topped up one pack size by buying two more packs, same make, same model, same capacity, same label to some bought two months back, yet these are quite different proportions, being wider and lower, also a little longer.  (not the same supplier as above friend used).

Late last month another friend bought packs that were 1500mAh 4S 80C rated, yet were fitted with red JST (rated only 3A by manufacturer!!)  :o

WHAT A MESS............................. Note to LiPo manufacturers - SORT it PLEASE!!!!!!!!!!   :banghead: :banghead:

Offline hoverfly

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Re: LiPo Battery Sizing
« Reply #1 on: November 14, 2017, 09:11:44 »
Late last month another friend bought packs that were 1500mAh 4S 80C rated, yet were fitted with red JST (rated only 3A by manufacturer!!)  :o

WHAT A MESS............................. Note to LiPo manufacturers - SORT it PLEASE!!!!!!!!!!   :banghead: :banghead:

I noted this as well , also the power leads are well under spec for the current rating.  If the battery is cheap enough just fitting a  suitable connector  is the  remedy, although a p.i.t.a.
I think they will get the message when sales drop or they get  fried returns.. :rolleyes:
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Massive over draught.....

Offline betty

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Re: LiPo Battery Sizing
« Reply #2 on: November 21, 2017, 09:51:54 »
I wonder which brand?

Offline atomiclama

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Re: LiPo Battery Sizing
« Reply #3 on: November 21, 2017, 10:08:54 »
Wasdale X, Ow that hurt

Offline Bajadre

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Re: LiPo Battery Sizing
« Reply #4 on: November 21, 2017, 13:17:16 »
no connector and red jst  :o  :o that's gotta be some cheap packs lol  :laugh:

cant knock tattu tbf prob bought about 12 packs over this year, night and day difference from my turnigys for quality and power  ~~
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Offline Bad Raven

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Re: LiPo Battery Sizing
« Reply #5 on: November 21, 2017, 16:39:56 »
The "No power connector and weird balance plug" were Hyperion and they were not cheap!

The red JST power plugged 4S high C rated packs were from a very well known named much promoted and claimed super high power pack, I'll not say now, see if you can find them for sale!

Offline betty

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Re: LiPo Battery Sizing
« Reply #6 on: November 23, 2017, 08:44:03 »
Nope, Tattu does not even sell 1500mAh 4S 80C battery!

Tattu ?  :evil