Is that really a Wisper Works 905e ?

[alanwarwic]

Thanks. I have just found the Wisper section but no matter, (unless a mod finds spare time and wants to move this.)
I had a long 4 mile outward climb yesterday and seeing the yellow light I(hopefully) erroneously thought I was on half power. A fairly severe 1 mile uphill at the end meant I played it safe pedalling more than maybe needed.

 

[flecc]

The meters aren't accurate when under power Alan, the current drain into the motor causes them to dip. They can only give a reasonable indication of battery charge content when the bike is at rest or not under any motor power.

It's best to use this section for most queries since it's where most will see them, and Wisper's own personnel regularly see Wisper related threads in here.

You should be able to start your own new threads now by using the blue "New Thread" button at the top left.
.

 

[Mussels]

Thanks. I have just found the Wisper section but no matter, (unless a mod finds spare time and wants to move this.)
I had a long 4 mile outward climb yesterday and seeing the yellow light I(hopefully) erroneously thought I was on half power. A fairly severe 1 mile uphill at the end meant I played it safe pedalling more than maybe needed.

When the motor is in use then the lights will display less than when it is stopped.
When using full throttle and pedalling I'd expect the yellow light on my 905se to come on (when stationary) after about 10-15 miles. I've never seen the red light on at under 30 miles so that might give you something to guage it by. How old is your bike and battery?

 

[eddieo]

I had a long 4 mile outward climb yesterday and seeing the yellow light I(hopefully) erroneously thought I was on half power. A fairly severe 1 mile uphill at the end meant I played it safe pedalling more than maybe needed.

The lights on handle bars mean little, they dip when under strain, hill climbing etc... and then recover. until nearly flat when they don't really recover

have you lights on battery? these are far more reliable. but all you can really do is get an idea of range and act accordingly

 

[alanwarwic]

Its the (early I think) 2008 model.
No lights on the actual battery itself.
I assume the BMS is in the box needing an allen key at the base of the battery.
Looking at the rear verticle plate attached to the battery I can't for the life of me think how to remove it from the bike. There is a slide lock to lock the battery in but it certainly seems not needed.

Today in considering that the long 4 mile hill was relatively gentle for my knees I went out on my normal pedal bike to see how it felt.
I did an extra 13 miles and still felt I had worked slightly less than when electrified!
So if the weather holds I will try the same with the electric bike but with much less effort from me.
I now think I can manage the hill on the return even with a flat battery.
I think it would be a good idea to try throttle only for that return hill.

The bike itself is for my old dad and I am sizing it up before I pass it on.

 

[eddieo]

its a bit of a waste of battery capacity using throttle only on hills...... really best to peddle if you want a decent range.

 

[alanwarwic]

I'm trying to gauge what I will get from the aged battery.
THrottle only on that final section should confirm that its still got decent power.

Am sure on my first charge the power adapter was using nearly 200 watts(central meter not my LIDL single device meter I used yesterday so that is a hint that I had a near full battery left.

I'm hoping for near 20 miles on a standard surface with some decent and non detrimental capacity left.

 

[Mussels]

I'm trying to gauge what I will get from the aged battery.
Trottle only on that final section should confirm that its still got decent power.

Am sure on my first charge the power adapter was using nearly 200 watts(central meter not my LIDL single device meter I used yesterday so that is a hint that I had a near full battery left.

I'm hoping for near 20 miles on a standard surface with some decent and non detrimental capacity left.

My 905 is from summer '08 and the battery has powered my for several thousand miles, I would still expect to get 20 miles from it without any pedalling.
The BMS is housed in the battery casing and the controller is in the box that needs allen keys to open, if the side lock is undone and leads disconnected then it should slide straight upwards into the seat if it's still fitted. If the battery has been poorly looked after and allowed to run flat then it may be worse.
It's not a good bike to pedal without assistance but should be very good for someone who wants to take it easy.

 

[geostorm]

Wisper 905

I had a look at this bike, all seemed ok , but what put me off is the price that wisper charge for their batteries £500 how can they justify such a price, makes me wonder how much other spares are ?

 

[flecc]

I had a look at this bike, all seemed ok , but what put me off is the price that wisper charge for their batteries £500 how can they justify such a price, makes me wonder how much other spares are ?

That is a normal price, believe it or not. The equivalent one from eZee which uses the same internals is also £500, and the smaller 26 volt one for the Panasonic powered bikes is £395 from the cheapest supplier. These are all the latest technology types, some cheaper e-bikes use older technology lithium batteries at £200 to £300 each.

Only the old and very heavy lead acid batteries are much cheaper, around £100 for a 36 volt set, but they often last only a year or a little over.

All the other spares will be at the usual lower prices you'd expect, it's just lithium batteries that are so expensive, no matter who supplies them.
.

 

[eddieo]

I had a look at this bike, all seemed ok , but what put me off is the price that wisper charge for their batteries £500 how can they justify such a price, makes me wonder how much other spares are ?

there are generic batteries on ebay for £200'ish or there where......Bob "Blew it" mentioned them a while back. this would mean a cheap bike.

as for the price of a wisper battery that's life! and what you have to pay for most powerful and reliable battery around with a 2 year warranty

 

[Wisper Bikes]

Battery price

Hi Geostorm,

You don't have to buy one of our 504W models, we have a 288Wh battery for under £300 which is much closer to the industry standard.

We will soon be launching a super distance 20.5Wh 36V or 738Wh battery which will retail at over £700.

If you shop around you will find all batteries are all around the £1.00 per 10Wh mark. The other interesting point is that according to most electric bike manufacturers, you will get around 1 mile from each 10Wh in your battery.

We are particularly confident in the battery technology we use hence all our batteries come with a two year warrantee.

As in most things in life you get what you pay for.

All the best

David

 

[Blew it]

Ouch!

there are generic batteries on ebay for £200'ish or there where......Bob "Blew it" mentioned them a while back. this would mean a cheap bike.

as for the price of a wisper battery that's life! and what you have to pay for most powerful and reliable battery around with a 2 year warranty

I don't think the QPB battery would be up to it, even those early 905's were fitted with 18 amp controllers.

Considering the machine sold for £215, even if a new Wisper battery was purchased, it would still be a darn good bike for £740. If the new owner has the skill to carry out frame slide mods, the 17 ah battery used on the Freego Eagle would be a good bet at £300