[F16bmathis]

I'm being told by my wife that there's a huge pallet with a load of batteries waiting for me. I think I'm coming down with something... I should go home.

[JRoque]

Yeah, you don't look so good. I hear there's a week-long flu going around. I may catch it too soon after placing my order...

JR

[DIYguy]

Nice to get batteries so quick! wow....

[MN Driver]

Originally Posted by F16bmathis

I'm being told by my wife that there's a huge pallet with a load of batteries waiting for me. I think I'm coming down with something... I should go home.

Ordered on Monday the 27th, arrived on the same day the next week, wow!

[rblack]

[quote=F16bmathis;204450]

Originally Posted by RE Farmer

Previouly, when I looked on Elite's site...quote]

I bought the batteries without a BMS. I'm looking at http://www.evequipmentsupply.com/page47.html right now. He says it is a BMS and monitor. The site really didn't menmtion the BMS side of things all that well. I like the display functions.

I thought this was the BMS part of it?
CELL EQUALIZER: Every cell needs one Equalizer. There are four different equalizers dependant on the amount of balancing current that the equalizer has to shunt.

Now the only question is... Will it balance on the bottom of the pack? My BMS does but I don't know who made it for sure.

[F16bmathis]

Well, I did pay ElitePower Solutions almost $1000 more for getting them quick.
Opened the boxes, they came in packs of 4 with the end plates installed more copper buss bars than needed and all the nuts and bolts.

I'm trying to charge the pack in series with a 5 amp charger that doesn't seem to have a 3.4V setting. I put it in automatic, which shows about 3.7V, but it only charges for an hour (with one battery) before it shuts off. Guy at the4 hobby store seemed to be a battery kind of guy, and said it would work fine, so I'm going with it.

The pack will easily fit where the 6V Trojans used to be, but the bed frame may short out a row or two, so I'll have to work that out.

[JRoque]

Originally Posted by F16bmathis

Well, I did pay ElitePower Solutions almost $1000 more for getting them quick.
Opened the boxes, they came in packs of 4 with the end plates installed more copper buss bars than needed and all the nuts and bolts.

Excellent! But wait, was that $1K above the $9.7K you had previously quoted? Or did they include the hardware without the extra pay?

Originally Posted by F16bmathis

I'm trying to charge the pack in series with a 5 amp charger that doesn't seem to have a 3.4V setting. I put it in automatic, which shows about 3.7V, but it only charges for an hour (with one battery) before it shuts off. Guy at the4 hobby store seemed to be a battery kind of guy, and said it would work fine, so I'm going with it.

Hmm. I'm not following this. You're saying charging the pack in series but then talk about 3.4V which is for 1 cell. Or do you mean serially one at a time after the other? At any rate, if your 5A charger is displaying 3.7V - and assuming your cell came charged to 50% - then you're not putting enough current through. It would seem your cables are too thin/long or there's significant loss in the charger<>cell connection. Have you measured the voltage at the cell terminals?

JR

[F16bmathis]

Originally Posted by JRoque

Excellent! But wait, was that $1K above the $9.7K you had previously quoted? Or did they include the hardware without the extra pay?

Hmm. I'm not following this. You're saying charging the pack in series... Have you measured the voltage at the cell terminals?

JR

See thats why I'm not an engineer. I meant Parallel. I ran the charger all night, it charged for just over 6 hrs before shutting off.

The $1K was included in the $9700 price. Had I wanted to wait I could've got them for $8800.

[ElectriCar]

How's this project coming along? I'm interested in the newest TS cells now.

Did you get the newest ones?

Did you get a closely matched set?

Early on I was turned off by TS cells because of higher internal resistance = higher heat generation = wasted power on heating batteries.

I'm searching hard for ir of TS cells. Hi Power is <2mo, Calb is <1. TS used to be like 3. Doesn't sound like much but it is triple the Calb thus triple the wasted power! That's one reason I'm going away from lead!

To recharge my pack of US2200XC lead, nearly 20% of the input power at 28 amps is in the form of heat if my reasoning is correct. Basically my recharge last night wasted enough power to increase the 1500lb pack temperature 5 degrees F. That equates to about 2.1kw! All after only traveling 11 miles.

[EVfun]

I don't know what the internal resistance is but it must be low on the newer TS cells. I have the small 60 ah cells and have pulled up to 5C (300 amps) from them. My pack stays over 116 volts (over 2.9 vpc on my 40 cell pack.) The Zilla controller is programmed to 600 motor amps but only 300 battery amps so I have some hang time at 5C (seconds at a time.)