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Danny
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PostPosted: 15:58 - 28 Feb 2023    Post subject: motorcycle jump starter recommendations Reply with quote

Does anyone have a recommendation for a compact motorcycle jump starter?
There are lots of great ones for cars but they are very large, looking for something smaller.
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Freddyfruitba...
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PostPosted: 16:22 - 28 Feb 2023    Post subject: Re: motorcycle jump starter recommendations Reply with quote

Danny wrote:
Does anyone have a recommendation for a compact motorcycle jump starter?

I've got one of these:
https://www.halfords.com/motoring/battery-maintenance/jump-starters/halfords-advanced-lithium-jump-starter---up-to-2l-677444.html?

Obviously, I bought this in response to getting stuck with a flat battery, and equally obviously I've never had occasion to actually need to use this thing since I bought it so can't comment on it's effectiveness. It's quite compact though, and doubles nicely as a powerpack for my phone
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doggone
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PostPosted: 16:53 - 28 Feb 2023    Post subject: Reply with quote

I got this one about a year ago and it has worked with various things including tractors and diggers as usually you are just helping it out not turning entirely from tiny power pack.
It's about the size of a larger phone but the clips make the bag it comes in a bit unhandy.
You can also use this one at least as a powerbank to charge phone, camera etc - another lead , included.
https://www.amazon.co.uk/gp/product/B07DNDWBH2
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Danny
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PostPosted: 17:36 - 28 Feb 2023    Post subject: Reply with quote

doggone wrote:
You can also use this one at least as a powerbank to charge phone, camera etc - another lead , included.
https://www.amazon.co.uk/gp/product/B07DNDWBH2


That looks great, thanks!
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stinkwheel
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PostPosted: 17:36 - 28 Feb 2023    Post subject: Reply with quote

Best bet is keep your charging system in good working order and do regular checks on your battery.

If you're finding you need a jump starter on a regular basis, something is wrong. And if it isn't it soon will be because batteries don't like being flattened repeatedly.
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Kawasaki Jimbo
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PostPosted: 20:13 - 28 Feb 2023    Post subject: Re: motorcycle jump starter recommendations Reply with quote

Freddyfruitbat wrote:
Danny wrote:
Does anyone have a recommendation for a compact motorcycle jump starter?

I've got one of these:
https://www.halfords.com/motoring/battery-maintenance/jump-starters/halfords-advanced-lithium-jump-starter---up-to-2l-677444.html?

Obviously, I bought this in response to getting stuck with a flat battery, and equally obviously I've never had occasion to actually need to use this thing since I bought it so can't comment on it's effectiveness. It's quite compact though, and doubles nicely as a powerpack for my phone

I’ve got one of those. It definitely does the job although it wasn’t long before it wouldn’t hold more than 75% charge, judging only by the 4 indicators. The crocodile clips take up as much space as the battery unit.

https://i.postimg.cc/nLmtKLgR/868-F3876-4-EB7-4-D2-C-B915-5588-BCEC92-C0.jpg
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Danny
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PostPosted: 15:45 - 01 Mar 2023    Post subject: Reply with quote

stinkwheel wrote:
Best bet is keep your charging system in good working order and do regular checks on your battery.

Good advice for sure.
I'm trying to figure out what is actually wrong if anything with my bike so am getting this in case I don't diagnose it correctly.

Fitted a new battery - maybe it's a dud
Charging system shows good voltage 14.1 > 14.9v
Could be a few other things like paracitic drain etc
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WD Forte
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PostPosted: 16:38 - 01 Mar 2023    Post subject: Reply with quote

I'd be a wee bit cautious of the wallet sized ones
Its a fact that Li-ion does have a greater charge density than lead acid
but its hard to find true and accurate values of how much
actual energy, ie work, is stored on them.

As above, a well maintained bike will rarely need to be boosted
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BTTD
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PostPosted: 22:42 - 07 Mar 2023    Post subject: Reply with quote

stinkwheel wrote:
Best bet is keep your charging system in good working order and do regular checks on your battery.

If you're finding you need a jump starter on a regular basis, something is wrong. And if it isn't it soon will be because batteries don't like being flattened repeatedly.


I run a small digital voltmeter on all my bikes. Last one i fitted was a Koso one.
https://www.koso.com.tw/en/products/dashboard/race/super-slim/ba024b00 that i got from Aliexpress pretty cheap.
Over the years I've spotted dodgy readings on three occasions which have been failing reg/rec units. Saved me knackering a battery and being stranded at the side of the road.
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BTTD
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PostPosted: 23:00 - 07 Mar 2023    Post subject: Reply with quote

Danny wrote:
Fitted a new battery - maybe it's a dud
Charging system shows good voltage 14.1 > 14.9v
Could be a few other things like paracitic drain etc


Dud battery - you need to see the voltage drop when you turn the engine over, and preferably the amperage being pulled. I bought a clamp meter for about £25 to test exactly that. On that particular bike the starter should have been pulling about 30amps, wheras it was reading 5 amps and dropping to 7 volts. Brand new battery was replaced foc, after some arguing during which I worked out from the serial number that the supplied battery was over six years old. Cnuts.

Charging system - is the voltage stable while riding / throughout the rev range?

Parasitic drain - trickle charger or solar panel and controller will negate that if it's not a fault of some kind.


Of no help to the actual question asked, sorry.
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WD Forte
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PostPosted: 03:44 - 09 Mar 2023    Post subject: Reply with quote

Problem solved.
I see a Li-ion battery pack with 10,000 amp capacity on Ebay
Solar powered too!

That'll bump start anything right?
Only £14.99

https://www.ebay.co.uk/itm/225404839410?
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rpsmith79
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PostPosted: 10:06 - 09 Mar 2023    Post subject: Reply with quote

WD Forte wrote:
Problem solved.
I see a Li-ion battery pack with 10,000 amp capacity on Ebay
Solar powered too!

That'll bump start anything right?
Only £14.99

https://www.ebay.co.uk/itm/225404839410?


With an output of 5V & 2.1A, it probably won't be much use
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Danny
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PostPosted: 11:50 - 09 Mar 2023    Post subject: Reply with quote

BTTD wrote:
Danny wrote:
Fitted a new battery - maybe it's a dud
Charging system shows good voltage 14.1 > 14.9v
Could be a few other things like paracitic drain etc


Dud battery - you need to see the voltage drop when you turn the engine over, and preferably the amperage being pulled. I bought a clamp meter for about £25 to test exactly that. On that particular bike the starter should have been pulling about 30amps, wheras it was reading 5 amps and dropping to 7 volts. Brand new battery was replaced foc, after some arguing during which I worked out from the serial number that the supplied battery was over six years old. Cnuts.

Charging system - is the voltage stable while riding / throughout the rev range?

Parasitic drain - trickle charger or solar panel and controller will negate that if it's not a fault of some kind.


Of no help to the actual question asked, sorry.


Found the issue, the new battery was a dud!
EuroCarParts tested it for free and found it had about 37CCA instead of the claimed 230.
Got them to test the new battery and that was 330CCA ( nearly 50% better than the spec )
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