[motor guy]

hello all
just wanted to tell everyone about our situation. and/how hi power and the electric car co made everything right.
my name is kevin from topeka electric motor, we have showed you our 2000 s10 truck. topekaelectricmotor.com this is were it can be viewed.
we have 48 cells 200 amphr. with reap bms.
shortly after we had the truck running our bms found that we had some weak cells, these cells wouldnt hold the same substainable charge, we made 3 long test runs to try to get over the 100 mile mark, the batteries all performed exactly,the same to about 75miles. and then you could watch the voltage levels lowering considerably faster on these cells than the other cells. we had 10 cells showing these signs. you could put the truck on the charger and these 10 cells would come back to the correct voltage and all 48 cells would end up .030 volts from highest to lowest. like i said we did this test 3 times, loging voltages per cells and total volts per mile. aslong as you only drove less than 70 miles and then recharged, the cells performed exactly the same,you wouldnt of know there was a problem, until you went over that range and you then had these lower cell issues. without a good bms it would be hard to find and prove these issues.
hi power batteries say they have a 2 year warranty, well after all the documention and proof, we had 48 new cells show up at our shop today. we will be installing them this weekend.

big thanks to carl clark (electric car co ) and hi power batteries. stand up companies are hard to find these days.

thanks kevin

 

[motor guy]

thanks david

carl has told me about your car, sounds real neat. also tell him you want a copy of the video of our truck he made up.
let me know how the torture test works out.

maybe i am just over stimulated, about our new ac motor but i think there are going to be some big gains made in the ev world in the next few months from all who develope the new ideas.

thanks kevin

 

[motor guy]

we have alost gone 100 miles, like we have stated 95.5 miles is our best to date. no cigar yet.
the good effiency, i think is all beause we use the 5 speed transmission to stay in the warp 9's best power range, you will soon figure out the amps per mph to achieve the best range.
one item i find very interesting is that on slave #2, cell's 9,10,12 will drop their voltage around the 85 mile range to about 2.5 vdc,while cell #11 is still above 3.0 vdc. when this happened the first time we took a vom meter and check all the battery voltage to make sure the bms wasnt giving us bogus readings. our batteries are all series connected.
we had to answer alot of questions and send lots of data to prove there was an issue to hi power, i am so glad we bought a good battery management system that can supply you with that kinda data.
that was a good lesson learned.

thanks kevin

 

[motor guy]

hello all, just wanted to say our new batteries are installed and must say we are very happy.


thanks
kevin
topeka elctric motor

 

[motor guy]

hello to all

i would like to offer more input if anyone is looking to purchase a set of hi power batteries, or are just have some questions on how they act or perform under load.

i will try to answer any question to the best of our ability, if we dont know i would be glad to try to find out.

since we have installed our new pack, our weather has been colder, in the 20's in the morning and highs about 45, we have been driving and useing our heater and charging in the afternoon,and all seems to be good. they are charging up balanced and have very good power even when cold.

we are not trying to stand up for any companies past behavior or actions, all i know is what they have done now. they seem to be attempting to make all better. but i will give a piece of advise to hi power " if you trip and fall again,and dont support your customers, your reputation will be completely damaged beyond repair." that will most likely mean no more sales of batteries to the usa ev market.

our ph # is 1-785-233-4750

thanks kevin constant
topeka electric motor inc.

 

[motor guy]

hello to all

on our new pack we got a test sheet and a serial # sheet. the test sheet showed that the pack had 213 amphr per cell.

thanks kevin constant
topeka electric motor inc.

 

[motor guy]

hello

no we have taken them that low yet. i was waiting to get a few cycles on them first. but as soon as i do i will tell the world the findings.
because i believe that the truth will make better products.

thanks kevin

 

[motor guy]

hello to all
i said yesterday that i would tell how our pack is doing.

we are testing our new pack in the cold weather here in kansas, it was 17 deg F this morning. i realize for optimum performance we should have a heated battery box. our truck is still running great with out it. the battery voltage is staying from highest to lowest .04 between all 48 cells. we have 42 miles on this charge,while running the heater, and our high cell is 3.279 and the low cell is 3.234 vdc. the sos meter shows that we still have about 50% left in the pack.

we will continue to run the pack to about 80% DOD and then tell you all the #'s.

like i said yesterday, we have nothing to hide, it is what it is, we wont bump any # to make it look better.


thanks kevin

 

[motor guy]

hello all

well i just wanted to up date our mileage and voltage. for the new pack.
we have run our pack down to 20.5% on the sos meter,after 59.5 miles. 20.2 of which were on the hiway, 60-65 mph.it has been cold here so we are also running our heater. we started with our total pack voltage of 163.2 vdc.

after pulling in the drive way tonite and not giving the cells any time to rest or regain any voltage by sitting, the highest cell was 3.144. lowest cell was 2.933. for a total pack voltage of 147.636. for 48 cells.

we put the batteries on the charger tonite,it is the 5th time on the charger,and we will see in the morning how it is, the weather guy says single digits tonite for the temp. so some cold test runs in the morning.

thanks kevin

 

[motor guy]

hello all

just wanted to say that all is good on the new pack. for the about the last 3 weeks it has been in the teens and 20's in the morning and about 32 deg f at the end of the day. the pack seems to work good even when it is 10 deg f. there is some loss but way less than lead acid.

we just ordered another 48 pack from carl for the new truck. we have the electrical specs on the new motor and hopfully monday we will have the mechanical demensions. it will be 72 volt, at 94.1 % eff. and A good chance we will have the first built unit by the end of janurary.

as soon as we get all the demensions and specs we will post them.

as far as the hi power batteries we are very pleased, like we said we just ordered another set. we had issuses with the first pack and hi power stood behind them and made it right.

i like very much dealing with a company that takes care of its customers. that how we run our business everyday.

thanks
kevin
topeka electric motor inc
ev designs dept