Anyone know how to find a replacement battery for a Claud Butler Glide 2, or would it need all new electrics?

Emma Hope

Finding my (electric) wheels
Aug 27, 2019
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Dear E.bikers - does anyone know how to find a replacement battery for a Claud Butler Glide 2, or does it need all new electrics? I bought a Claud Butler Glide 2 in 2013 and sent the battery back to be replaced when it stopped working, but didn't get it and now would like to find a replacement battery - the bike is in good order, and wondered if there is a hybrid which matches the connections and battery carrier? Or if it has to be all new electrics fitted? Thanks for any suggestions
 

Nealh

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The original battery was a 36v Lifepo4 I believe , you can confirm this by telling us of showing a pic of the charger label. If you can't source another lifepo4 battery then buy a new rear rack and battery with charger so that you know it fits and will charge, you can buy and use a lighter Li-on battery instead of Lifepo4.

You can try asking Ebikes direct as they sell the Glide e bikes.

Show us a good pic or two of your rear rack.
The controller will still be attached in the compartment at the front of the rack.
 
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Emma Hope

Finding my (electric) wheels
Aug 27, 2019
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Dear Nealh, this is the rack and some views of it - have is sent a photo of the controller and the compartment? Does this show what sort of battery would be compatible? Thanks very much for looking, best emma
 

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Nealh

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Finding the exact battery/case to fit may not be easy unless you can try Ebikes direct or ebikes4u. The four pin outs means that there is nothing special abut the electronics.

The cost of changing the battery to li-on and new controller etc will be in the region of about £300 - 350 pounds for the parts alone, any battery sized to fit your existing rack will work.
 

Nealh

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These lifepo4's look pretty much 99.99% like a match, though are from China via Aliexpress. Problem is, if a fault occurs you are stuffed and duty/tax will be liable bumping up the price another £30 - £50 or so.


 
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Emma Hope

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Aug 27, 2019
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Thank very much, that is really helpful, will check all those out, really grateful to you for looking, best emma
 

wheeliepete

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This battery is the same as the ones Nealh linked to, Li-on cells, but not very good value being small capacity, but UK seller should you have any problems with it.
 

Emma Hope

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Aug 27, 2019
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Thank you very much - can I ask - What's the difference between a LifePO4 and a Li-On battery? And how do you see the relevant spec about capacity? thanks very much
 

sjpt

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Slightly different chemistry in the two, more charge for same weight in Li-On. The LiPo used to be quite a bit cheaper (hence fitted to your bike originally), but the price difference is quite small now (I think).

Capacity is measured in wh (watt hours, like your electric bill except that is kwH, 1000 times more). Sometimes they just quote the amp house (ah) , the capacity is the voltage (36 in your case) times the amp hours. so 36v * 8.8aH = 316.8wH in the wheeliepete example above.

If you look at https://www.bosch-ebike.com/en/service/range-assistant/ you will get an idea how far you can get with a given battery size in different conditions and different amounts of your effort. It's for Bosch bikes but most a fairly similar if efficiency. You'll see huge differences for the same bike between good flat roads in windless summer conditions with minimal assist (often quoted as 'up to' in blurb) and more realistic conditions. Often you'll see more than 100 miles go down to 30 mile range. I suggest you go for a battery that will do about 50% more than you think you need.
 

Nealh

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Sjpt is muddying the waters by suggesting the battery is Li -po which it isn't.
The battery is Lifepo4 or lithium iron phosphate it is the safest form of lithium chemistry, the iron phosphate unfortunately adds to the weight as does the extra cells. Unlike Li-on or the slightly riskier Li-po which both are 10 cells in series the Lifepo4 uses 12 cells in series for 36v, the reason being is cell capacity max's out at 3.65v charge per cell and is empty at 3.2v per cell for economic use. The Lifepo4 will have a max 43.8v voltage.

Li-on/Li-po voltage range typically similar of 3.3v - 4.2v, Lifepo4 3.2v - 3.65v.
Lifepo4 holds so much more range within in a shorter voltage range but the weight made the other Li options lighter to use.
 
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Nealh

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Changing from Lifepo4 to Li-on isn't straight forward, the former uses higher discharge rates then Li-on so you would really need a new controller and display and probably some re-wiring of connectors.
The Lifepo4 controller could age the Li-on cells a lot quicker, it all depends on what the discharge specs are for the CB Glide 2.
Also you can't mess with charging as the charges use different voltage values.
 
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Nealh

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Thank you very much - can I ask - What's the difference between a LifePO4 and a Li-On battery? And how do you see the relevant spec about capacity? thanks very much
Lifepo4 = Lithium iron phosphate, 3.2v - 3.65v voltage range.

Li-on = Lithium ion, 3.2v - 4.2v voltage range.

Li-po = Lithium polymer, 3.3v - 4.2v voltage range though 3.6v is a safer lower voltage due to the instability of the chem used.

Top to bottom they are in order for most stable chemistry.
 

Emma Hope

Finding my (electric) wheels
Aug 27, 2019
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I checked the spec for the Glide 2 - says the battery is: 36 volt - 10 Amp Lifepo4 Battery cells with Extended charging life.

Does that mean because of amps matching, it would need to be a match to the one coming from USA (which is 10ah 10.5ah,) although it looks exactly the same as the one from UK, (which is 8.8Ah):

USA supplier: Long cycle 2000times LiFePO4 36V 10ah 10.5ah rear rack battery pack for ebike with charger

UK supplier: 36V 8.8Ah 317Wh Rear Rack with Charger and Original Cells.

Thank you so much for your help on this, really grateful for your advice
 

Emma Hope

Finding my (electric) wheels
Aug 27, 2019
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This battery is the same as the ones Nealh linked to, Li-on cells, but not very good value being small capacity, but UK seller should you have any problems with it.
Thank you very much, it does look the same, take your point about the capacity and the UK seller. much appreciated, thank you
 

sjpt

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Sjpt is muddying the waters by suggesting the battery is Li -po which it isn't.
Absolutely correct, apologies.
 

Emma Hope

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Aug 27, 2019
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Dear Nealh and sjpt and wheelieman - thank you so much for all your help - I have ordered the exact same one 10ah from who knows where anyway paid in dollars via Aliexpress, so think it must be from China, and it's coming in June so have to get the tyres pumped up by then but thanks for pushing me off on my bike to get it done, much appreciated. Bertrand Russell taught my father to ride a bicycle, so feel very grateful to have your equivalent sage advice to get me going on my bike all these years after best to you Emma
 

sjpt

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Good luck, I hope it all goes smoothly.
 

Emma Hope

Finding my (electric) wheels
Aug 27, 2019
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Lifepo4 = Lithium iron phosphate, 3.2v - 3.65v voltage range.

Li-on = Lithium ion, 3.2v - 4.2v voltage range.

Li-po = Lithium polymer, 3.3v - 4.2v voltage range though 3.6v is a safer lower voltage due to the instability of the chem used.

Top to bottom they are in order for most stable chemistry.
Dear Nealh, thank you very much for really explaining the difference and making it all clear. Have been wanting to get my bike on the road for a very long time, and didn't know how to find the right battery, so really appreciate your help in nailing the facts down and looking the battery up with your expert eye. Thanks very very much, best regards Emma
 
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