HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Apr 07, 2012, 09:35 PM
Garry
Tumble weed country Eastern Washington
Joined Aug 2004
530 Posts
I've only ever seen 2s hard case packs, but I have not looked hard either. Hard case is for cars.
crash-rc is offline Find More Posts by crash-rc
Reply With Quote
Sign up now
to remove ads between posts
Old Apr 08, 2012, 05:11 PM
Registered User
kmac1369's Avatar
United States, MD, Boonsboro
Joined Feb 2012
186 Posts
Supporting the new guy!

I just ordered 2 3S 2200mah 25C! I paid for priority shipping so I hope to have them by Wednesday (I live on the east coast).

I'll be sure to give some feedback after I receive.

Strictly based on pricing, I'm pretty happy as the batteries I ordered today are out of stock at HobbKing.com and HobbyPartz.com.
kmac1369 is offline Find More Posts by kmac1369
Reply With Quote
Old Apr 09, 2012, 10:41 PM
More Motors, More Fun... :-)
nioa's Avatar
Phoenix, AZ
Joined Jan 2008
700 Posts
Just ordered four 4S, 5000mAh, 25C Lipo's.

Name: HaiyinBatteries-3823.jpg
Views: 88
Size: 194.7 KB
Description: 4S, 5000mAh, 25C

Ordered on Thursday, got em on Monday, would have had them Saturday, but I wasn't at work to receive them then.

Weight 545g and dimensions as stated on the website. Nice soft silicone wires for the XH balance connectors. 10 AWG discharge lead. No stated charge rate on the battery.

They look nicely made. All cells were 3.83 to 3.84 volts.

I'll report how they perform when I get some cycles on them.

And don't forget your RCGroups 10% discount!

HAIYIN, perhaps you would consider NOT putting on connectors, (except for those nice XT60's of course). I have to cut them off anyway. I use EC5's. If your dead set on providing those connectors, then it would be very convenient if your website also sold the mating connectors for those that wanted them.

Nick
nioa is offline Find More Posts by nioa
Reply With Quote
Old Apr 10, 2012, 10:34 AM
*Noted Nerd*
Oregon Craig's Avatar
United States, OR, Sandy
Joined Jul 2004
664 Posts
I use the Deans myself. I don't have any huge amp pullin' monsters here. I would agree with supplying the packs without connectors. Perhaps stripped, nicely tinned and heatshrinked (heatshrunk?) for shipping.

The ultimate of course would be the ability to order with your favorite connector installed, but I could see that being an inventory nightmare for Haiyin. I don't think installing a custom connector at the time of the order would be practical, nor would having an inventory on hand with not only each pack, but each pack with each different connector.

I'll just solder my Deans on, but that's easy for me and maybe most people, but not everyone.

Just thinking out loud here.

-Craig
Oregon Craig is offline Find More Posts by Oregon Craig
Reply With Quote
Old Apr 10, 2012, 11:13 AM
Registered User
United States, NJ, Clayton
Joined Aug 2010
1,580 Posts
Quote:
Originally Posted by Oregon Craig View Post
I use the Deans myself. I don't have any huge amp pullin' monsters here. I would agree with supplying the packs without connectors. Perhaps stripped, nicely tinned and heatshrinked (heatshrunk?) for shipping.

The ultimate of course would be the ability to order with your favorite connector installed, but I could see that being an inventory nightmare for Haiyin. I don't think installing a custom connector at the time of the order would be practical, nor would having an inventory on hand with not only each pack, but each pack with each different connector.

I'll just solder my Deans on, but that's easy for me and maybe most people, but not everyone.

Just thinking out loud here.

-Craig
yeah, 90% of the packs that I have I remove the connectors that it comes with.
keithy4129 is offline Find More Posts by keithy4129
Reply With Quote
Old Apr 10, 2012, 02:21 PM
More Motors, More Fun... :-)
nioa's Avatar
Phoenix, AZ
Joined Jan 2008
700 Posts
Quote:
Originally Posted by HAIYIN View Post
After extensive internal testing, we now state that ALL Haiyin packs can be charged at up to 5C. Many thanks also go out to the excellent field testers
Quote:
Originally Posted by nioa View Post
Just ordered four 4S, 5000mAh, 25C Lipo's.

.... No stated charge rate on the battery.

Nick
HAIYIN, I looked at your website and could not find this declaration. I may have missed it. The label on the battery refers you to follow instructions, but none are given.

May I suggest that you place this valuable information on the website. I would have assumed that I can only charge at 1C. It is very useful to know that I can charge at 5C if I so choose.

Thanks,

Nick
nioa is offline Find More Posts by nioa
Reply With Quote
Old Apr 10, 2012, 05:48 PM
1,1,2,3,5,8,13,21,34
Shortman's Avatar
United States, OR, Portland
Joined Nov 2003
2,116 Posts
I'm looking at their website and it states clearly on each battery they list the charge rate... I am referring to this website.. most are between 1.5C-3C depending on pack size and cell count

http://www.haiyinstore.com
Shortman is offline Find More Posts by Shortman
Reply With Quote
Old Apr 10, 2012, 08:46 PM
Registered User
brushless55's Avatar
United States, CO, Longmont
Joined Nov 2011
4,044 Posts
Quote:
Originally Posted by nioa View Post
Just ordered four 4S, 5000mAh, 25C Lipo's.

Attachment 4771644

Ordered on Thursday, got em on Monday, would have had them Saturday, but I wasn't at work to receive them then.

Weight 545g and dimensions as stated on the website. Nice soft silicone wires for the XH balance connectors. 10 AWG discharge lead. No stated charge rate on the battery.

They look nicely made. All cells were 3.83 to 3.84 volts.

I'll report how they perform when I get some cycles on them.

And don't forget your RCGroups 10% discount!

HAIYIN, perhaps you would consider NOT putting on connectors, (except for those nice XT60's of course). I have to cut them off anyway. I use EC5's. If your dead set on providing those connectors, then it would be very convenient if your website also sold the mating connectors for those that wanted them.

Nick
They look good!
what are you using them in?
thanks
brushless55 is offline Find More Posts by brushless55
Reply With Quote
Old Apr 11, 2012, 02:33 AM
Batteries
Hong Kong, Hong Kong Island, Central
Joined Aug 2011
99 Posts
HAIYIN - Connectors or Not

We agree that it would be ideal to offer a service of choosing your style of plug at the time of purchase.

Unfortunately, since we are a factory in China, we are not able to provide this customized service without adding significantly to the cost to the finished packs.

Also, we cannot stock a wide selection of preconfigured pack/connector options, for the obvious inventory nightmare reasons.

We have researched customer opinions on shipping our packs without plugs, but that would mean EVERYONE must solder and that is not a perfect solution either.

Yes, you can charge HAIYIN packs at up to 5C, but that is not posted on our website. To get maximim cycle life out of our packs, we stick to publishing Max Charges Rates based on the industry formula ( Max Charge = Max Current in Amps divided by the Pack capacity in Ah ). That said, we know of many hobbyists who would gladly accept the trade off between "fewer cycles" and "less time on a charger" !!!

ENJOY OUR PACKS!
HAIYIN is offline Find More Posts by HAIYIN
Reply With Quote
Old Apr 11, 2012, 11:55 AM
Registered User
United States, NJ, Clayton
Joined Aug 2010
1,580 Posts
Quote:
Originally Posted by HAIYIN View Post
We agree that it would be ideal to offer a service of choosing your style of plug at the time of purchase.

Unfortunately, since we are a factory in China, we are not able to provide this customized service without adding significantly to the cost to the finished packs.

Also, we cannot stock a wide selection of preconfigured pack/connector options, for the obvious inventory nightmare reasons.

We have researched customer opinions on shipping our packs without plugs, but that would mean EVERYONE must solder and that is not a perfect solution either.

Yes, you can charge HAIYIN packs at up to 5C, but that is not posted on our website. To get maximim cycle life out of our packs, we stick to publishing Max Charges Rates based on the industry formula ( Max Charge = Max Current in Amps divided by the Pack capacity in Ah ). That said, we know of many hobbyists who would gladly accept the trade off between "fewer cycles" and "less time on a charger" !!!

ENJOY OUR PACKS!
makes sense, for those capable of soldering, its easy to desolder an existing plug. However, In My Opinion, if you are into electric flight, soldering is just part of the fun, it should be a skill electric fliers should have
keithy4129 is offline Find More Posts by keithy4129
Reply With Quote
Old Apr 11, 2012, 01:06 PM
More Motors, More Fun... :-)
nioa's Avatar
Phoenix, AZ
Joined Jan 2008
700 Posts
Quote:
Originally Posted by HAIYIN View Post
.......Yes, you can charge HAIYIN packs at up to 5C, but that is not posted on our website. To get maximim cycle life out of our packs, we stick to publishing Max Charges Rates based on the industry formula ( Max Charge = Max Current in Amps divided by the Pack capacity in Ah ). That said, we know of many hobbyists who would gladly accept the trade off between "fewer cycles" and "less time on a charger" !!!

ENJOY OUR PACKS!
I am enjoying the packs so far, thank you!

Thanks for the clarification on the 5C rating.

Nick

brushless55, I am using them in a beautiful Seagull Piper Twin Comanche 46 ARF, and probably in my Efilte T-34 as well.
nioa is offline Find More Posts by nioa
Last edited by nioa; Apr 11, 2012 at 01:17 PM.
Reply With Quote
Old Apr 11, 2012, 02:27 PM
Registered User
microwave's Avatar
lac superieur - chemin le pointe croix
Joined Apr 2008
159 Posts
Quote:
Originally Posted by HAIYIN View Post
Yes, you can charge HAIYIN packs at up to 5C, but that is not posted on our website. To get maximim cycle life out of our packs, we stick to publishing Max Charges Rates based on the industry formula ( Max Charge = Max Current in Amps divided by the Pack capacity in Ah ). That said, we know of many hobbyists who would gladly accept the trade off between "fewer cycles" and "less time on a charger" !!! ENJOY OUR PACKS!
Certainly HAIYIN must have some quantitative idea of any significant "trade off" in order to arrive at their suggested/recommended charging rates shown below and at http://www.haiyinstore.com . Some of the charge rates seem inconsistent, so I've posted some 3S examples with some noticeable differences and a few questionable comments.

There would appear/seem to be some inconsistency in how HAIYIN determines the recommended charge rating for their 3S packs. For example your H1800.3S.40 is the only 3S.40 pack with a charge rating of 5C(9A). Most all other HAIYIN 3S packs from 800mAh thru 2200mAh rated at 20C to 30C have only a 1.5C charge rating. Is the charge rate of 5C(9A) for the H1800.3S.40 a typo mistake?

Logic could suggest that the H2200.3S.30 should at least have a charge rate of 1.6C (3.5A) if it has a true discharge rate of 30C. Most all other 3S.30 packs above 2200mAh have a charge rating of at least 2.0C and as high as 3.3C.

It would be helpful if you could explain why one of your 30C packs shown below(H2450) has a charge rating of 3.3C; while other HAIYIN 30C packs have a charge rating between 1.5C to 2C. Also, why is it that H3000.3S.35 has a charge rate of 3.3C (10A); while H3000.3S.40 has a lower charge rate of 3.0C (9A). Isn’t it generally true that the higher a pack’s discharge label rating, then the higher the permissible amperage during charging (charge rate)?

800.3S.20 ... 1.2A (Recommended Charge Current) = 1.5C (Recommended Charge Rate)

1300.3S.20 ... 2.0A = 1.5C
1300.3S.25 ... 2.0A = 1.5C
1300.3S.30 ... 2.0A = 1.5C

1600.3S.20 ... 2.4A = 1.5C
1600.3S.30 ... 3.2A = 2.0C

1800.3S.20 ... 2.7A = 1.5C
1800.3S.30 ... 2.7A = 1.5C
1800.3S.40 ... 9.0A = 5.0C

2100.3S.35FX ... 10.0A = 4.8C

2200.3S.20 ... 3.1A = 1.4C
2200.3S.25 ... 3.3A = 1.5C
2200.3S.30 ... 3.3A = 1.5C

2450.3S.30 ... 8.0A = 3.3C

2650.3S.40 ... 8.0A = 3.0C

3000.3S.35 ... 10.0A = 3.3C
3000.3S.40 ... 9.0A = 3.0C

3300.3S.20 ... 6.6A = 2.0C
3300.3S.30 ... 6.6A = 2.0C

4000.3S.30 ... 8.0A = 2.0C
4000.3S.40 ... 10.0A = 2.5C

4500.3S.30 ... 10.0A = 2.2C
microwave is offline Find More Posts by microwave
Last edited by microwave; Apr 11, 2012 at 02:40 PM.
Reply With Quote
Old Apr 11, 2012, 03:19 PM
Registered User
So. Cal.
Joined Oct 2004
8,434 Posts
Quote:
Originally Posted by HAIYIN View Post
To get maximim cycle life out of our packs, we stick to publishing Max Charges Rates based on the industry formula ( Max Charge = Max Current in Amps divided by the Pack capacity in Ah ).


Help us out here. If I am reading correctly, max charge current = max discharge current / capacity in Ah.

For a 30C, 500mAh pack, maximum discharge current is 15A.

By the above formula, Max charge current would then be 15A / .5 = 30A?

You might want to recheck your charge rate formula and revise...

Mark
mrforsyth is online now Find More Posts by mrforsyth
RCG Plus Member
Reply With Quote
Old Apr 11, 2012, 03:47 PM
Registered User
microwave's Avatar
lac superieur - chemin le pointe croix
Joined Apr 2008
159 Posts
Quote:
Originally Posted by mrforsyth View Post
Help us out here. If I am reading correctly, max charge current = max discharge current / capacity in Ah.
Possibly he really meant to say “'Recommended' Charge Rates" rather than “'Maximum' Charge Rates". It's not apparent/obvious how HAIYIN is calculating their "Max Charge Rates" based on a pack’s discharge label rating.

For example their H500.3S.20 … 1.0A (Recommended Charge Current) = 2C ( 1.0A divided by 500mAh or 0.50A = 2C).

A couple other examples from the above list:

1800.3S.40 … 9.0A = 5.0C (9.0A divided by 1800mAh or 1.8A = 5C), and
2100.3S.35FX … 10.0A = 4.8C (10.0A divided by 2100mAh or 2.1A = 4.8C)
microwave is offline Find More Posts by microwave
Last edited by microwave; Apr 11, 2012 at 03:52 PM.
Reply With Quote
Old Apr 11, 2012, 04:16 PM
1,1,2,3,5,8,13,21,34
Shortman's Avatar
United States, OR, Portland
Joined Nov 2003
2,116 Posts
Ok guys I got my 2 packs in today and quickly got them assembled with EC5 connectors... I will be flying these in a 12S set up on my JR NEX E8 helicopter. So far from initial measurements these look very promising, I have Gens Ace 25C 3800mAh packs for comparison and I took IR measurements.

Using the iCharger 306B for all measurements

IR taken at 64F (same as when I measured the Gens Ace)
These are straight from the box, no cycles yet

HAIYIN 30C 6S 3600mAh #1: (3,3,3,3,3,3) 18mΩ

HAIYIN 30C 6S 3600mAh #2: (3,3,3,3,3,3) 18mΩ

Cell voltages were 3.84-3.85v per cell or a difference of .01v on a couple of them, most matched.

Measured IR at 64F
This was the 5th cycle on all these packs being broken in...

My Gens Ace 25C 6S 3800mAh packs
Pack 1: (3,2,3,5,2,2) total 17mΩ

Pack 2: (3,3,3,3,3,2) total 17mΩ

Pack 3: (3,3,3,3,3,3) total 18mΩ

Pack 4: (3,2,4,3,3,2) total 17mΩ

Pack 5: (3,3,3,3,3,3) total 18mΩ

Pack 6: (3,3,4,4,3,3) total 20mΩ
Shortman is offline Find More Posts by Shortman
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Welcome to our official Venom Group International / RC Groups product support forum! Chris Nicastro Venom 84 Feb 07, 2012 12:15 AM
Discussion Haiyin LiPo Batteries ggroyal1117 Batteries and Chargers 7 Dec 14, 2011 05:01 PM
Discussion RC groups on a Smartphone Scottmac737 Site Chat 4 Sep 27, 2011 02:56 PM
Discussion Bought some Bad Batteries off a guy at RC Groups DaveBC Trader Talk 26 Mar 09, 2011 06:11 PM