new eZip motor

[DrkAngel]

Trickle (Balance) charging LiPo at 1A is inefficient and unnecessary.
Tis much better to charge at a higher rate, upto .5C ... ≤ 5A into true 10A LiPo.
50w charger(?) is limited to ~2A for 6s 25.2V.
What is the make and model of each balance charger?
Online manual should tell the charging capability of each. 50w? 100w? other?


You can watch balance function of balance charger.
While "Balance" charging, push #3 button.
This should display the voltage of each cell and you can watch the cells equalize.

 

[DrkAngel]

You can repair - resolder broken wires on balance extenders ... you know?
Plug into mated connector(to transfer heat away and keep proper alignment) and keep heat application brief.
Remove old heatshrink
Slide replacement onto wire
Ensure wire end is good wire, strip further if necessary and add short extension wire bit. (Having repaired wire shorter will result in excessive stress and will break again)
Flux wire and pin
Put small bead of solder on iron and pause as tip reheat
"Pre-tin" pin and wire
Apply small bead of solder to tip and pause for reheat
Hold wire firmly in position and briefly apply tip
Keep wire extremely still till solder set, maybe 1 second
Test as firmly attached
Slide heatshrink into position and heat into place

 

[DrkAngel]

• SkyCharger 6200 is 200w capable
• Balance Charge 6s 5000mAh @ 2A - 2x 5000mAh (10000mAh) @ 4A - 4x 5000mAh (20000mAh) @ 7A
  . (Might recommend 1.5A and 3A and 7A to match reduced actual capacity)
• Balance Charge 6s 8000mAh @ 3.5A - 2x 8000mAh (16000mAh) @ ≤ 7A
• Balance Charge 6s 10000mAh @ 4A - 2x 10000mAh (20000mAh) @ ≤ 7A (Keeping somewhat below maximum output helps extend charger life (for Dell PS also)

Safe charging amperage and will save plenty of time.
Trickle charging LiPo seems to amplify any imbalance!

 

[latecurtis]

Thanks for posting


however you are overestimating my soldering skills by approx. 1,000% if you are thinking there is even a remote chance of soldering that balance extender wire.

:lol: :lol:

 

[DrkAngel]

Check Battery Condition

Balance Charge Packs to "Full". Confirm balanced by cell voltage monitor function - button 3 once while balance charging.
Note Full cell voltages ("Note" means write them down!)
Let set several days to allow noticeable self-discharge - notably greater discharge will pinpoint Bad cell
Note cell voltages
Discharge normally til near empty
Check and compare cell voltages
Note "Empty" cell voltages - comparison to Full voltages should pinpoint weak cell
Balance charge till Full - use ~.4-.5C charge rate
Note cell voltages
Note mAh required to fully charge

 

[latecurtis]

Top cell is still a little high.

Thinking about running SLAs maybe tomorrow. Not sure. charging until full after 0 amps could take quite a while. May be time to run the SLAs.

Also depends on whether I got to go to my doctor to get my script filled. I don't want to go over two miles as the slow down voltage on those was around 3.7V if I remember correct.

 

[Sunder]

Just leave it on the charger - Without any significant current, chances of catching fire are not any higher than if you were just storing them.

If it makes you feel better, leave them outside or in a fireproof place.

 

[latecurtis]

http://www.ebay.com/itm/XT-60-Female-To-HXT-4MM-Male-Bullet-Connector-Adapter-/230637596465?hash=item35b3126f31:m:mwo-quBxLYZO_m-4Bg1t91g

Yea I could solder those on there but this way I can use those to solder onto the wires from the controller. however will need a series cable so am ordering some more 4mm
bullet extenders.

Also you were right about those clips with the SLAs. They were hooked to the desulfator on my front porch and we got a hail storm or small tornado like weather and one of the clips came off and almost caused a short. I will need to solder wires with bullet plugs on the terminals on the SLAs. I just ordered 8 more of the bullet extenders for all six SLAs

Also running 36V 20AH is a ridiculous amount of weight. three SLAs on the back of the DiamondBack actually = close to perfect weight distribution with the front hub motor. Doing the math.

36V@20Ah = approx 200 - 50% charges or approx 18 months depending on how many times per week I use them.

36V@10Ah = approx 100 - 50% charges or approx 9 months but since I own six and run three at I time it really wont make much difference.
Also the other factor which could extend their life would be walking up any moderate to steep hills and only run them on the flat and gradual inclines and keep speed between 10 and 15 mph on the flat for = or below 1C discharge rate.

There is also a good reason for me to replace the SLAs and that is during extremely hot weather like 90 degrees and above there is too much heat running LiPo especially in a metal box. On the other side of the coin single digit and below zero temperatures could make LiPo packs run slow or not run at all. In these cases SLAs are the way to go.

I wont be splitting the 8.0 - 6S LiPo packs either as they are very easy to run and charge and even though there was a low cell in one of the packs and I ran one of the packs below 3V one time , since I balanced and combined them for 16Ah I had no issues with them and voltage discharging and charging have been very stable.
I believe they are rock solid and good for several years at 16Ah. I just need to rebuild that 20" bike. Thanks.

LC. out.

 

[DrkAngel]

There is also a good reason for me to replace the SLAs and that is during extremely hot weather like 90 degrees and above there is too much heat running LiPo especially in a metal box. On the other side of the coin single digit and below zero temperatures could make LiPo packs run slow or not run at all. In these cases SLAs are the way to go.

SLA run even more poorly, in the cold.

 

[latecurtis]

I have run SLAs in really cold weather but not LiPo. Therefore I cannot compare and will take your word for it.

However LiPo packs in a metal box at 90+ degrees is a bad idea.

I currently have two 36V controllers. Also I figured out how to mount six SLAs to the triangle rack for excellent weight distribution allowing a large cargo basket on the back. It will actually be an addition using wood and L brackets to the top of the rack. 36V@20Ah will happen.

The other thing I want to try and do is waterproof the batteries, controller and motor. I need a waterproof e bike and think I can pull it off. Silicone will work after I solder the bullets on. I am thinking about mounting the controller inside the triangle rack by modifying it with a jigsaw.

I wont have to touch the spoke sprocket as with 36V at 750W and 2250 rpm gearing will be for 26 mph which will work very well for flat and hills.

All the bullet cables I need for parallel charging and soldering to the SLAs terminals are ordered. all orders are from US only and expected to be here within a week I believe. Thanks and will keep you guys posted on the build.

LC. out.

 

[latecurtis]

As the Hub Motor Turns and the LiPo Fire Burns. Lost cause.

I really wanted to install that 500W motor with #25 chain and sprocket on the front of the black 20" bike. Without the correct size freewheel though I kind of gave up on it. Also I will need nuts and bolts and probably another piece of wood. I tried to get one but the bike club did not have one and wanted to sell me a 20" bike just to get one for $10 but it was the day before I got my disability check and I only had $5 I wanted to spend. Also I had the Schwinn and could not carry a 20" bike. The bike shop wanted almost $30 with the tax so I wrote it off as a lost cause.

The cash box with the two 6S packs combined for 16Ah just sits out on the front porch collecting dust.

As far as the 24" build I think I have everything I need to make it 36V@20Ah. I got the SLAs, two 36V controllers and the motor is already installed.
What needs to be done is to swap the 48V controller for one of my 36V controllers and work on the triangle rack so I can install the SLAs.

I am just waiting on the bullet cables so I can solder them to the terminals. There is one other problem I am dealing with though. Ambition.
I hate to say it and am sure you all probably have noticed it over the years that I am really LAZY!

Not to mention that as soon as I wake up I am on Pirates tides of fortune. I have 6 havens. three in each server. It is the last thing I do before going to bed and when I wake up. Minimum is about 10 hours a day sitting in front of my desktop. Totally ridiculous. thanks.

LC. out.

 

[DrkAngel]

Not to mention that as soon as I wake up I am on Pirates tides of fortune. I have 6 havens. three in each server. It is the last thing I do before going to bed and when I wake up. Minimum is about 10 hours a day sitting in front of my desktop. Totally ridiculous. thanks.

LC. out.

Don't be stupid!
Setting in front of your desktop?

Output computer into a 50" HD TV and sit back in your recliner with wireless keyboard and mouse.

 

[latecurtis]

I am using a 32" HD TV and a wireless mouse. I have a 60" HD projection TV I bought in 07 at a place called Arons. similar to rent a center. and my 24 monthly payments together were over $3,000. cash price was $1,580 and it broke a year after paying it off in 010. Been sitting for six years now broken.

It turns on but has about 1,000 little white dots. Some kind of a chip it needs. I am charging my camera now and will take a picture plus my new recliner. My friend Eric's father passed with a heart attack. He bought all new living room furniture about a month or so before so Eric passed it on to me as he always has new furniture from Arons.

I can also take a picture of the model # on the back of the TV. I priced the part and was about $200 or more on e bay. Since you own a computer store maybe you know where I can get the part cheaper.

I did get L brackets so I do have the hardware needed to build a battery rack on top of the triangle rack. A also need to balance charge those old LiPo packs Dan sent as I got an appointment at City hall Friday and may need to go to my doctors to pick up my test results and find out about my prescription. tomorrow or Thursday. balance charging now. Thanks.

LC. out.

 

[Sunder]

I am using a 32" HD TV and a wireless mouse.

Bigger isn't always better. They recommend that a screen takes up about 90% of your field of view for best ease of viewing. For 32", that means sitting around 1.25m or about 4 feet away - further than most people sit (usually 80cm-1m).

Also, not all TVs make good monitors. They tend to be less sharp (since this doesn't matter when watching fast moving TV, but makes a difference when you have small writing). You also get input lag on TVs. On a computer, the designers know that there can be no lag between an action and the response on screen. On a TV, if both sound and video is delayed by the same amount, then its unnoticeable.

Try out a 27-28" 4K screen for gaming, and your TV will feel like you're back on an Atari.

 

[latecurtis]

Pirates tides of fortune is not a action game that requires a video card and so many frames per second. I have an x box 360 and action games which I never play. Also Big red my gaming machine. Since playing Pirates tides of fortune I have not even turned them on but maybe for 5 min.
My friend averages 6 to 8 hours a day on 1 server. I play in both servers. :lol:

thanks.

LC. out.

 

[latecurtis]

As the Hub Motor Turns and the Lipo Fire Burns.

 

[latecurtis]

I balanced charged the Lipo packs Dan sent last night and was on the charger balancing for 6 hours. I checked the voltage today and the top cell was 4.24V which is dangerously high. I was told that the charger will balance the pack in balance charge mode but it failed miserably. I had no choice but to hook it up to the balancer today.

I am wondering if I should continue using the pack. If the cell is indeed bad then it could be puffed and in fact catch on fire. What is worse is I have no clue where the key to the cash box is so I have no way of opening it to find out if the pack is puffed up.

I was wondering about what you said about taking out a cell making it a 5S pack. The other two 5.0 - 6S LiPos had no problem balance charging and were all 3.19 to 3.18V when hooked to the balancer the next day. This will also require splitting the combined packs up to find the bad cell. Somehow I will need to get in the cash box without drilling the lock as that may puncture one of the packs. what should I do?

 

[latecurtis]

That is after 1 hour on the balancer. The balance charger did a terrible job as lord only knows how high that cell was last night as it read 4.24V about an hour ago.

It was at 0 amps balance charging for about 6 hours last night until early this morning. Thanks. Please let me know.

 

[Sunder]

That is after 1 hour on the balancer. The balance charger did a terrible job as lord only knows how high that cell was last night as it read 4.24V about an hour ago.

It was at 0V for about 6 hours last night until early this morning. Thanks. Please let me know.

The only way you could be 0v is if there was a connection issue.

You can't recover from 0v. It would be extremely puffed or totally destroyed internally.

 

[DAND214]

So you are telling me that you slept with the battery while charging. That is something I won't do. Sleep with my Lipos :?
I will sleep with my young lady but never a LiPo, just not my type :lol:

Did you charge on charge or balance and at what amperage?
I have seen my pack with a BMS hit 4.25v and then started to balance them down. 4.24 isn't not dangerous, unless the cells are damaged. But never inside while you sleep, NO, NO,NO!

 

[latecurtis]

The only way you could be 0v is if there was a connection issue.

You can't recover from 0v. It would be extremely puffed or totally destroyed internally.

So you are telling me that you slept with the battery while charging. That is something I won't do. Sleep with my Lipos :?
I will sleep with my young lady but never a LiPo, just not my type :lol:

Did you charge on charge or balance and at what amperage?
I have seen my pack with a BMS hit 4.25v and then started to balance them down. 4.24 isn't not dangerous, unless the cells are damaged. But never inside while you sleep, NO, NO,NO!
User avatar
DAND214 100 MW
100 MW Posts: 2683Joined: Sun Aug 10, 2008 9:28 pmLocation: Chicagoland nw suburb Mt. Prospect

I stated it before and will say it again I have never charged LiPo without hooking the balance cable and balance charging.

the 0 amps not 0V sorry the balance charger timed out three times before unplugging and going to bed. That was about 6AM and charging AMPS were at 0 for 4 hours. The balancer was hot as hell and the screen was like half black a few minutes ago. I thought it was totally burnt out but now about a hour later the three balancers all look normal. that was crazy as hell. I am taking pictures now.

 

[latecurtis]

 

[latecurtis]

the dirty bas - - - -s sent me the wrong plugs. They should be made to walk the plank after dumping a couple buckets of bloody gizzards in shark infested waters I say.
arrrrrr

I just checked my e bay and maybe I should go see an eye doctor.

that and stop playing pirate games and pick up a soldering iron. :lol:


thanks.

LC. out.

 

[Sunder]

the 0 amps not 0V sorry the balance charger timed out three times before unplugging and going to bed. That was about 6AM and charging AMPS were at 0 for 4 hours. The balancer was hot as hell and the screen was like half black a few minutes ago. I thought it was totally burnt out but now about a hour later the three balancers all look normal. that was crazy as hell. I am taking pictures now.

Balancer being hot means it's working. It needs to do something with the energy its burning off, and heat is the easiest way to get rid of it.

If it's hot enough to turn the LCD black, get a fan on it.

I can't read those screens real well, but it looks like cell 3 is 4.20 and the rest are just below. If you want to speed things up, you can charge cells 1 and 2 as a 2S pack, and cells 4, 5 and 6 as a 3S pack. Once they're all at 4.20, let it rest for a couple hours and recheck the balance. if it's not still exactly, it should be pretty close.

 

[latecurtis]

I did not have a beer yet when it happened and light was not on but yes it most likely could use a fan. Balancer by design survived what I thought I saw which was a black triangle covering half the screen but not anymore. Unless I put it somewhere else but think I only had three up here. The one that was on the 20" bike handlebars got crushed working on it.

The point is though the balance charger failed to do the job in 4 hours that the balancer did in about two, and that was to get the cell down under 4.2V.

However the sky charger was the cheap 200W one I ordered.

The mega charger I got is 400W. The one Dan sent. Do you think it would do a better job balance charging the packs?

the fact is it is kind of important as any LiPo charger can charge LiPo. The question is the difference in balancing power or capability or a specification measuring the performance capability of balancing cells awhile charging them.

I like DAs toolbox as the balancer was in there I believe. However did DA ever delete this horrible device.

I think it is worth a try. After I run them downtown tomorrow we shall see if the mega charger works better than the Sky charger balance charging.
or will the balancer do the best job balancing those LiPo packs.

thanks.