Long Term Test Outcome - eZee battery

[Conal]

My battery refs are
XH370-10J
DC37.0V
S/N JGJGBJ100152, translating the code, J=O. ABC = 123
07072(does the J here = 0 as in 20th?) = may be 20th July 2007; and production no 152
Does this make my battery one of the new improved ones or one of the old "soon need to replace" phylion batteries (please Flecc?)
Conal

[flecc]

Yes, you've translated correctly Conal. Your battery is not the latest type, but is from a period when they were continuously being improved. The outcomes for these could be variable, and much depends on the usage and territory ridden.

Are you experiencing any problems?
.

[Jeanette Morgan]

My two Lithium batteries translate as 06/08/2007 and 26/08/2007 are these from the newer ones?

Regards
Jeanette

[flecc]

Not the one I had on test Jeanette which is a larger capacity, but at a later stage of improvement of the 10 Ah ones.

HarryB reports his November replacement battery as being very much better than his old one from the first half of the year. I don't know if it's possible to know exactly how much they improved month by month, but a new internal battery management system (BMS) was brought in during this upgrading period and that will have helped them to perform and last better.
.

[Conal]

Flecc
I have experienced pretty consistant output; about 17 miles on a relatively flat route of six miles at full assist, and 20 miles at setting 4/5 on a hilly route.
All factors being the same, What do you think I woud achieve for the two same routes with the latest battery?
Conal

[flecc]

My experience is 40% more for this 4.6 kilo Li-ion battery Conal, so it would probably be similar for you.

Bear in mind though that the Li-polymer battery is going to be the chosen one at present, and I don't know the capacity of that. Best wait for the release so we'll know what size it is for certain.
.

[Conal]

Thanks Flecc,
it looks like my next battery will give real improvements and enough oomph to get me from home to work on one charge each day, if I have 90 minutes to spare! Its great to see the results of real fieldwork.
Conal

[coops]

Many thanks for your endurance flecc, the results are much appreciated and long-awaited! .

Good to hear of the improved performance; I very much hope the production will be of a consistently good quality too. For me a 14Ah capacity battery would be really useful, so if the chosen polymer turns out to be lower capacity, around the present 10Ah say, then I hope that if the phylion proves itself then Ezee will introduce it.

After all, at 4.6kg weight the phylion is comparable to (or maybe a bit less than) the Ezee NiMH 9Ah which are fine, but with over 50% more capacity .

I almost forgot, could you tell us the nominal operating voltage (or range) for the battery you tested flecc? Was it around 39.6V?

I hope you get back to spinning and recover the fitness loss: your 'sack of spuds' reference just reminded me - I've been trying to do similar and have finally managed to lose some weight (about 7kg in 6mths, though thats just the start...) although as you'd have guessed mostly while riding my MTB but I still have the Torq for longer/faster trips: with more weight loss & pedalling on that I'll hope to get even more range from a bigger battery.

Stuart.

[flecc]

Yes, the voltage was the same Stuart, but it was maintained much better under load. In fact for up to about 150 charges it was impossible to detect any deterioration of voltage under load. The amber started coming on a little earlier when under load as in climbing only as it went towards 200 charges, indicating some voltage drop, though the power has been largely maintained.
.

[coops]

Ah, by 'same' do you mean the same voltage as the previous Ezee phylion LiMn but with little or no drop under load then flecc?

I was getting confused with the 39.6V typical 'working' voltage of some LifePO4 12s 3.3V cellpacks, though I guess the 10s 3.7V (nominal) phylion packs operating voltage wouldn't be much lower than that, say 38-39V, for much of each charge if voltage drop is minimal?

Stuart.