BATTERY WRAP

[peter.c]

Silly question what size heat shrink do i need to cover a hailong 2 battery need to repackage this [inside from a yose power 12.5 ah 48v ]

 

[vfr400]

I've never seen a wrapped Hailong battery. they all have bare cells. If you want to wrap it, you just need heatshrink tube that's big enough to go over it.

 

[peter.c]

Yes but my tired old brain thinks dia of 100-120mm but sellers quote flat various 170- 200mm but brain does not get it the case will not fit in the frame triangle fs frame

 

[egroover]

That's your warranty gone then, and you've only had a couple of days lol !!

 

[vfr400]

Yes but my tired old brain thinks dia of 100-120mm but sellers quote flat various 170- 200mm but brain does not get it the case will not fit in the frame triangle fs frame

It shrinks a lot!

Every size here:

1 meter PVC heat shrink tube - Large Half Perimeter(mm) 50

PVC heat shrink tube Length: 1m

bmsbattery.com

 

[peter.c]

Yes but a cheap way to get a custom battery and charger

 

[peter.c]

https://www.ebay.co.uk/itm/Heat-Shrink-Tube-Tubing-Wrap-Sleeve-Blue-170mm-x-metre-18650-Battery-UK-Stocks/124069526891
so if i get 170mm flat that should do it
The pack is well made inside spacers and no glue gun

 

[Surf_Wonder]

Yes but a cheap way to get a custom battery and charger

My gear 48v 14ah for appox £47 (its BMS protected with charger included) x2, a parallel "Y" connector (for big journeys/camping) and because I messed up, shorted the charging cable of the battery, a Female 5.5mm x 2.1mm 25cm DC Power Barrel Jack Connector the charger has a DC connector ( my metal brow tweezers or nail file was the culprit oh the bang sparks and flame [sigh] I digress.

I foam and shirk wrapped (can't see the battery label now but so what ... drop protection comes first ), got soldering here n there including a inline fuse and now my bike is so light easy to carry and lift on/off trains, and more importantly I have '2' chargers included in the £93.39 cost of my versatile 2 battery kit.

For me not having those Hailong battery case is a blessing. Just sharing so that you can see there's other cheap options if you're comfortable with a soldering iron. BTW you can just buy a new case...

 

[Surf_Wonder]

That's your warranty gone then, and you've only had a couple of days lol !!

Warranties are for wusses -long live hacking

 

[Nealh]

For shrink wrap one has to add up the two dimensions to get a flat shrink size then once this is come buy add up to 50% to that figure to allow shrink.

Battery pack that say measures 110mm x 95mm will be 205mm when added together, so one would need to buy shrink wrap of a minimum 205mm size. To allow for shrink when heated one needs to opt for something larger at 260mm - 300mm shrink, other wise the battery pack will simply not fit. When one wraps the battery the shrink looks massive until heat is applied.

 

[Nealh]

My gear 48v 14ah for appox £47 (its BMS protected with charger included) x2, a parallel "Y" connector (for big journeys/camping) and because I messed up, shorted the charging cable of the battery, a Female 5.5mm x 2.1mm 25cm DC Power Barrel Jack Connector the charger has a DC connector ( my metal brow tweezers or nail fil.

And have you capacity tested to see if you get 672wh from the £47 soft pack ? At only 3 cells paralleled 14ah is wishful thinking, if you had a watt meter inline you could tell us what the actual wh is for a complete discharge.

£47 doesn't even buy a dozen decent 10a cells, let alone 39 for 13s3p. A BMS is £15 or so. The total price for a 48v 14ah battery just doesn't add up.

 

[peter.c]

Thanks for that nealh guessed at 224mm fingers crossed

 

[Surf_Wonder]

Paralleled , with the 145ltr load you see in the profile pic I was very comfortable at levels 3 and 4 - mainly uphill and high winds on the roads 12/13 miles with juice to spare (Barnstaple to Croyde Bay and a little runaround in between :-D).

The battery unit once fully charged is a cough over 52v. , I'm very very VERY comfortable with the performance of the batteries so I've had no reason to test them ESPECIALLY at that price - I'll pull out my multi-meter when I need to ... I just don't need to.

Unless I'm doing a run that needs me to carry 45ltrs of drinks or/and the DIY run I don't trailer up and parallel connect but I did expect the worst and wasn't expecting to still be happy (I bought 2 with the expectation of parallel connecting) .

Chopping leads, adding wire connectors, making dc to dc conversion units so that I can power other things ... I went in eyes wide open because those batteries aren't just used to power my bike yes I agree even though "the claim" is 14ah I doubt it is, it is 13/3 ... and lucky for me I flagged other naughtiness so full confessions the price was zero ... [again with the digressing ]

I'll rip off the sleeve and get counting and measuring when I don't have so many projects on the go