Endless Sphere

With a 200A controller, you will need an absolute minimum of >200A fuse!
200A fuse "burns up" at 200A, near 200A there is excessive heat and resistance.
300A recommended.

Checked a couple weeks ago also, couldn't get them either. Must have been a site crash? Always loved them, great prices and selection w/free shipping @ $150 purchase (used to be $100). Live within 50 miles so any shipping is reasonable. https://www.niagaracycle.com successful transitioned to https:...

Checked a couple weeks ago also, couldn't get them either.
Must have been a site crash?
Always loved them, great prices and selection w/free shipping @ $150 purchase (used to be $100).
Live within 50 miles so any shipping is reasonable.

Real tires with kevlar - Wait for "back in stock"
Good tubes
Tire Liners

Watseka appears to have been taken over, or rebranded as NAKTO.

Better parts catalog, with prices, Lithium battery available (too small and expensive for me though )
Many, not all, parts compatible.

NAKTO replacement parts

. hmmm, can no longer "attachment" pdf file Links to Manual and parts parts available by still good email link Watseka.com Manual pdf Replacement Parts - prices by email Replacement battery or cells not presently available but intend on replacing 9Ah 23.8lb SLA with 13.2Ah 6lb triple hoverboard bat...

. ... Watseka XP Click on picture, links to info-review https://electricbikereview.com/wp-content/assets/2016/08/watseka-xp-electric-bike-review-1200x600-c-default.jpg Originally touted as a cheap ($650), heavy (78lb), under powered (250w), slow (14mph) eBike. Customer brought in a beat up, broken ...

1st - "Battery" is a collection of cells working together. Single cells are not batteries! Basic parallel connectors with good matched cells will effectively carry 0A current. My battery builds, as are a considerable percentage, are a combination of several series batteries, paralleled together. Par...

With 2" studded tires, at room temperature, I keep them near 40psi. Which relates to, likely, < 30psi in sub freezing temps. I do set my bike outside for several minutes to acclimatize to the cold, don't want snow to melt and freeze on rims. But, keep my battery inside and warm, till ready to go. Ti...

. ... ☃ Winter projects? ☃ MY1016Z3 24V 350w gear reduction motors back in stock at good price! Reversible Push to 36V 525w+ 9T;11T;13T motor sprockets available, adapter for 13-22T+ freewheels https://endless-sphere.com/forums/download/file.php?mode=view&id=244589&sid=2271694638732cb89f7c7b94170e3...

I build 7s 25.9V batteries for a multitude of 24V eZips. So 2 - 7s segments is great for me, (14s for my 48V 750\1000w switchable, 14s lets me hit 30mph!), saddle bag deployment or otherwise ...

Swapped rebuilt eZip wheel is slightly off center and needs relocation via spoke adjustment. Will properly "true" during next fair weather period. I rebuilt 3 eZip wheels with spoke problems and 1 with a bad bearing cup, last Summer (only roughly centered and trued). 2 w/13ga SS and 1 w/14ga SS. All...

Just to note:
Using a 32V fuse effectively and safely with "48V" battery.
14s 51.8V Lithium battery @ "full" 58.8V.
Place 32V fuse between 2 x 7s segments!
Voltage across fuse will not exceed 29.4V.
(Will not affect BMS function)

20s (84V)
Fuse between 3 (7s 7s 6s) segments ...
etc.

I mentioned storing my older cells @ 3.85V, 3.65V for my newer chemistry Samsung and determining optimal voltage range for any cell type and storing at the 20-50% capacity voltage. Insuring , of course, that optimal (usable) voltage is determined at static voltage - Some manufacturers discharge grap...

.
... Updated Lithium Chemistry Chart

Link to full Article
- descriptions

Index . ... 25.9V 26.4Ah #1 finished 7s12p Samsung cells are capable of 120A continuous 240A surge but controllers are <30A and installed 40A fuse (trying new 58V fuses & holder) Just finished 1, had to test drive it ... rain stopped for awhile. No BMS installed! Turned out were only 20A continuous...

You must 1st realize the difference between static voltage (after discharge) and sag voltage (during discharge)! If you notice ... when used, I draw data from minimal discharge rates (0.2A < 0.1C) https://lygte-info.dk/pic/Batteries2012/Samsung%20ICR18650-28A%202800mAh%20(Purple)%204.3V/Samsung%20IC...

Well, back to the merits of my question. In the light of the facts I mentioned, do you still consider 3,85 V suitable voltage for winter storage of non recycled Li-ion cells ? Al cells vary at optimal usable voltage! https://endless-sphere.com/forums/download/file.php?id=165657 #1 Too deep discharg...

DrkAngel wrote: ↑

Nov 25 2018 8:22am

Capacity Mapping (Optimal Charge-Discharge Voltages)

Describes multiple methods, including:
Actual mapping from measured-metered charge;
Derived from manufacturers discharge graphs;
more.

Al cells vary at optimal usable voltage! Some cells are effectively empty at, as high as, 3.75V. https://endless-sphere.com/forums/download/file.php?id=119518 Storing at below "empty" is liable to be damaging (and dangerous)! I like to ensure a "safe" storage voltage, which is dependent on cell form...

DrkAngel, Is 3,85 V storage voltage meant for LiPo only or also for Li-ion cells ? If yes, do you have any reason to use such high voltage for winter storage ? Oft recommended is storing at ≤ 50% With some of my mapped cells 3.85V is closer to 20-25% Newer cells this is near 50-60% With the majorit...

11/23/18
26" and 700C now available - eBay

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... SW900 LCD Manual

LED vs LCD

Those smaller geared motors are great, do fine for most people. Just not the big guy towing a trailer up that hill is all. Personally, I can fry those smaller motors in 20 min easy as pie if I run it hard, like off road riding. This is more a climate problem I have, than anything else. Controller i...