Wisper 905 rain-induced powerloss

[Wisper Bikes]

That is strange Andy it could well be the key switch, have a word with Adrian next week and he will be able to help.

All the best

David

 

[Cyclezee]

Hi Andy,

You may have tried this already, but check the battery voltage at the socket where the kettle plug connects, you should get a reading there even with the key switch in the off position.

 

[rog_london]

Hi Andy,

You may have tried this already, but check the battery voltage at the socket where the kettle plug connects, you should get a reading there even with the key switch in the off position.

I think you got that wrong - there will be NO voltage at the kettle plug socket with the switch off. There should, however, be voltage at the coaxial socket (exactly like a UK TV aerial connector) where the charger plugs in.

You should get voltage at the kettle socket on the battery with the switch in the on position.

Do be careful with your meter probes - it's probably very easy to short out the charger connector.

Roger.

 

[Cyclezee]

Hi Roger,

I stand corrected, I was thinking the old Wisper batteries had kettle plug sockets for the charger rather than the output side.

 

[Hackney Andy]

Bang on Roger! 41.8 Volts on the charger side.

But dare I open the box to bypass the switch?

 

[rog_london]

That's about right. I take it you're out of warranty? Yes, you must be if it's a kettle plug battery. If you are, there's no harm in taking a look. I've heard of duff fuseholders as well as duff switches on those early batteries, because of the load, although those faults were not TOO common.

Bypassing the switch would not be a problem if that's where your trouble is, because you can just unplug the battery when the bike is parked, though I don't recommend you bypass the fuseholder. If it does prove to be a fuseholder problem you might like to try one of those in-line automotive fuseholders which take a plug in (spade) fuse - the 20 amp 20mm job fitted originally is hard to find, and that's really why the fuseholder is favourite to be the culprit, as they struggle with the load.

Rog.

 

[Hackney Andy]

Having taken a look inside I presume that when you refer to 'fuseholder' you mean the 'spade' car-type fuse inside the box - not the glass fuse you can access from outside which seems to be only part of the charging circuit? Mine is marked '30' so I assume it's 30 amps. It appears in tact and is inside a cellophane wrapper.

 

[shemozzle999]

Having taken a look inside I presume that when you refer to 'fuseholder' you mean the 'spade' car-type fuse inside the box - not the glass fuse you can access from outside which seems to be only part of the charging circuit? Mine is marked '30' so I assume it's 30 amps. It appears in tact and is inside a cellophane wrapper.

I would be very careful if you have gone inside the battery, if fact, I would leave it to Wisper to investigate that area.
Without a picture it is difficult to help you but I assume you have removed a rectangular plastic plate that holds the external fuse. Some of these have an extra clip to hold a spare fuse which I think you are describing.
The actual working fuse will be attached to the two metal blades and that is usually accessed by sliding out sideways.
If you set your meter to the lowest resistance range and probe across the two blades it should give you a zero reading showing the fuse is still intact.

 

[rog_london]

Having taken a look inside I presume that when you refer to 'fuseholder' you mean the 'spade' car-type fuse inside the box - not the glass fuse you can access from outside which seems to be only part of the charging circuit? Mine is marked '30' so I assume it's 30 amps. It appears in tact and is inside a cellophane wrapper.

There are a number of different versions of your battery - you've obviously got a later one with the internal spade fuse already fitted. Perhaps the external one is indeed only in the charger circuit on that one.

If the spade fuse is OK, then that probably only leaves the switch, unless a wire has come adrift.

Shemozzle's point below about being very careful is a valid one! Sensible at this point to carefully put it back together and let Wisper sort it out.

Rog.

 

[rog_london]

I would be very careful if you have gone inside the battery, if fact, I would leave it to Wisper to investigate that area.
Without a picture it is difficult to help you but I assume you have removed a rectangular plastic plate that holds the external fuse. Some of these have an extra clip to hold a spare fuse which I think you are describing.
The actual working fuse will be attached to the two metal blades and that is usually accessed by sliding out sideways.
If you set your meter to the lowest resistance range and probe across the two blades it should give you a zero reading showing the fuse is still intact.

Mine (905 late 2008 model) isn't constructed like that - the fuseholder is inside the battery (but accessible through an external hole) and you have to split the battery case to gain access to the internals and the switch wiring. Not for the fainthearted. It's because there are several versions that I hesitate to offer advice to someone who might endanger themselves.

Rog.

 

[Hackney Andy]

I'd had decided to hand it over to Wisper - all the wiring was connected with what I would consider 'permanent' means. I took a photo that I'll attempt post so you can see the contents of the battery.

Cheers and thanks for your assistance.

 

[flecc]

you have to split the battery case to gain access to the internals and the switch wiring. Not for the fainthearted.

The Post Office are obviously not among the faint hearted:

 

[shemozzle999]

Sorry for confusing the issue with my last post got it all wrong - the picture will help Wisper.

 

[Hackney Andy]

Having found out from Wisper that they don't have any replacement key switches for this type of battery anymore I've 'hot wired' it bypassing the switch as a temporary measure until I can find a suitable replacement. Thanks to those who gave advice and Wisper for their help and assistance.

 

[Wisper Bikes]

Hi Andy, I am in China later in the month, would you like me to pick one up for you?

All the best

David

 

[JuicyBike]

We have a stock of switches that suit this type of battery. Happy to send one if that helps out. Via Wisper if they want to check (David?) or straight to the customer. Let me know...

 

[Wisper Bikes]

Thanks Bob, you are a star! What ever the best way of supplying the lock is, is fine by me.

I will bring some back from China and will replace if that's OK?

I do like this business, when competitors feel confident enough to help each other out we must be going in the right direction, BEBA is really a great organization!

Thanks again Bob.

All the best

David

 

[JuicyBike]

No worries David! I'll wait for the customer to contact me and send straight to him. No need to replace. I think we're all on the same side after all.
Cheers

 

[Wisper Bikes]

We certainly are Bob, thanks again!

All the best.