Reid Welch
1 MW
I'd buy that except...
the part number read aloud sounds vaguely filthy.
the part number read aloud sounds vaguely filthy.
Definitely filthy599.00 EUR=801.071 USD
Definitely filthy599.00 EUR=801.071 USD
Reid Welch said:the part number read aloud sounds vaguely filthy. :lol:
If you want good cycle life and don't want to test other NEW battery manufactures problems, Kokams are here and ready to go! Sold IN THE USA.Lowell said:84.3Wh/lb is very good for a complete pack with what appears to be a BMS, but how many people will pay $2.77usd/Wh?
$154/Wh, but lower power density:
http://cgi.ebay.com/TREX-600-SIZE-Li-Po-Battery-4400mAh-18C-6S2P-MEGA-POWER_W0QQitemZ170094868786QQcmdZViewItem
Even paying full pop for A123 cells is around $2/Wh or so.
Its NO pipe dream.EglePicher Baught Kokam a year and a half ago and this was planned then as manufacturing these batteries around the world.So far NOW Kokam eliminated FMA (there RC partner) and are selling directly from distributors and KOKAM USA.No competition when it comes to quality and cycle life.But pipe dream or not there Batteries are the best at the best price per cycle and they are readily available NOW!Reid Welch said:At present that is but a pipe dream.
"Planned manufacture".
EbikeMaui said:Its NO pipe dream.EglePicher Baught Kokam a year and a half ago and this was planned then as manufacturing these batteries around the world.So far NOW Kokam eliminated FMA (there RC partner) and are selling directly from distributors and KOKAM USA.No competition when it comes to quality and cycle life.But pipe dream or not there Batteries are the best at the best price per cycle and they are readily available NOW!Reid Welch said:At present that is but a pipe dream.
"Planned manufacture".
Thank you Tyler. You ought to be a distributor.5. Q: How does Kokam America plan to improve its distribution and support of the RC market going
forward after the recent changes?
A: Kokam has recently established a direct support structure in the US as well as a company owned
distribution center outside Kansas City Missouri to support the RC market. In addition, as mentioned in
#4 above, Kokam is expanding its distribution channels by bringing on competent third party
distributors and dealers. Finally, Kokam is implementing plans to establish a production facility in the
US to support the North American market.
6. Q: How do I go about applying for a distribution or dealer license?
A: Please contact Larry Wright at the address located at the top of this letter.
7. Q: What other markets is Kokam selling into?
A: Kokam America has focused heavily on the Military and Aerospace industry over the past year, and
the same benefits the RC user enjoys has caught the attention of the US defense community and the
Aviation industry. Kokam was recently approved by the FAA and is now specified by Boeing on some
programs. In fact when Boeing releases its new 787 Dreamliner next year, Kokam is expected to be one
of the first Lithium batteries used in commercial aviation. Kokam is also involved in numerous other
high end applications such as medical equipment, power tools, electric vehicles, and robotics to name a
few.
8. Q: What is Eagle Picher’s involvement with Kokam, if any?
A: Eagle Picher has zero interest in the American entity and a minority investment interest in the
Korean entity. All sales in North America are through Kokam America.
Reid Welch said:... You ought to be a distributor.
I'll write to Larry Wright with questions.
powerizer said:Reid Welch said:I'll return the pack on Monday.powerizer said:Spark will damage PCM for sure.
Please don't add resistor on charging or discharging terminal !!! because it will reduce charging voltage..
May be the best reolutiojn is to use a safe plug to avoid any plug
Please return your pack and see what happen
I have done nothing for the pack except change the charging plug to a trailer type, because the supplied plug quickly welded itself.
My idea is misunderstood.
The proposal is a high value limiting resistor in the charger lead.
AND a SPST switch to =bypass= that resistor.
steps:
SPST switch OFF,
plug connector to battery pack,
SPST switch ON,
turn on charger.
The pack would always have =normal charging current and voltage=
there would never be any spark. A 1 to 10k resistor may be appropriate.
I would never charge with added resistance in the circuit.
Is this clear now?
=I leave it to you= to design some way to stop the sparking so the PCM will not be damaged.
Thanks
Reid
If plug get melted, means got wrong polarity somehow, PCM will get damage.
We will add a polyswitch on the charging terminal, and use a coaxis plug.
Please pay attention on polarity on both charging and discharging terminal ---- The best way to protect battery is make correct polarity.
We thought to add abreaker to discharging terminal , but it is too big and too expensive.
Please don't change our connector on charging terminal--- you shall change the connector on your side.
Edit message
From: Reid Welch
To: powerizer
Posted: Tue Apr 03, 2007 4:59 am
Subject: Return of pack for refund
Hello John,
The pack has been discharged to 36V and safely packed for return.
I've decided that this item is not reliable enough for my needs.
I have done everything so carefully. The charge connector is quite waterproof; and no water has gotten on anything.
The spark that occurs on plug-in has been present from the first time I charged the pack.
I have said, and will repeat, that the spark seems to be caused by an inrush of current to the charger's filter capacitor. That's just my guess.
The pack works, but it cuts out. We know these new things (new PCM design) require de-bugging.
I've been patient and so have you been patient.
For now I just want to have a refund and look around for other battery options.
I do regret cutting off the charger's original two-pin plug.
The charger only puts out 41.8V at most. The supplied barrel plug adapter was very poor--the spark destroyed it within two charge cycles.
I saw the two-pin charger plug as yet another -risk- of accidental shorting--it can make contact with reversed polarity; so I cut it out of the cord and put in a good trailer connector.
Ah well, I have tried so hard to -promote- BatterySpace's best interests.
My e-bike friends on the Endless-Sphere forum think I should not be risking and making myself the beta-tester for the new pack.
I did not know when I purchased the pack that it was so new and unproven.
What a difficult business. I would like to continue as a BatterySpace customer and promoter.
Your firm has fine people and products. It's just regrettable the lithium polymer pack is not quite ready yet for even experimental users like myself.
IF my cutting of the charger cord is to be blamed on me, then I will pay for the charger. But really, I feel like I've done so much to try to make this right.
Thanks for understanding my position.
When you get the pack back and see what is wrong, I hope the fix is easy.
But I do not want this pack again---I will buy some other pack which will be better tested and warranted for a longer period of time.
So, when you get the pack back, please refund my credit card.
Thank you,
Reid
Ha ha, but I'm fresh out of humor today. And I'm never gonna be a beta tester on my own nickels again.TylerDurden said:Reid Welch said:... You ought to be a distributor.
I'll write to Larry Wright with questions.
Well, first I'd gladly join you as a beta tester for the Kokam-fueled Cyclone driving a NuVinci CVP...
8)
If he takes a CC then we're both protected.