Battery jump starter - any tips?

Not being funny, but would it be possible to put a blanket over where the battery is (over the seat or tank) and then put a cover over the bike. This may well stop more cold than you think getting to the battery.
So long as you have somewhere to store the cover and blanket while you are out on the bike.

Other than that, a spare battery, or take the oneyou have inside and charge it up over night.
Sometime just taking the battery in at the weekend and giving it a full charge can keep it a lot more heathier for the week then you would think.

Other than that the booster you linked to seems the way to go, but as DD says, chose one you can keep constantly charged and wont blow up

 

The fact it's got a compass has sold me on the idea!! Help me find where I last left my keys... always to the north!

 

Check out the cranking power of the battery there are higher power ones available for most fittings, and they are usually the same size as originals or even sometimes smaller.The previous owner may have just put a cheap battery on , that is of course if he changed it. Dont know how long you have had the bike but has it been serviced etc, sometimes all it needs is new plugs. The blanket over the seat under the outer cover is a very good idea too from Red.
I just looked at the charger you were on about,ok it is much smaller than the car type one i have in the boot of my car but I wouldnt want to be lumping it round everywhere I went.

 

If you are going to have to take off the seat to connect jump pack then you are half-way to removing the battery and taking into the house, trickle charger or not.
Leaving the battery in on cold nights will not be good for it, regardless of you getting bike started with pack.
I remove mine and keep it in the house on cold weather it takes two minutes in and out. good extra security also, I dont use it daily though.
I dont necessarily put the battery on trickle when I remove it. It just likes to be in the warm.

 

I have a Motobatt, lovely bit of kit and so much more 'stronger' when starting.
For a while (not sure how long) the rectifier had gone on my bike and was putting 19v though the battery - pretty much cooking it.
I sorted the rectifier and the Motobatt carried on without a blink....other lesser batteries may well have exploded and spilttheir innards

I also just fittted a voltmeter so I can monitor the battery when I turn the ignition on.
Another thing I would be doing this weekend is putting an inline switch to the headlights so I can turn them off before starting the bike, just a contingency should the cold have affected the battery.

 

Mmmmm are your lights always on then?? I never knew that.
Summat to be said for older bikes then with a light switch. lol

Motobatt on my bike too, so much better starts .

 

watch out for chargers too mate. To much ampage feeding in will fry your battery. thats why optimate is so good it has a realy low feed rate

 

I am having exactly the same issue with my Bonnie.
New battery fitted 12 mths ago and I use the bike almost daily, ~ 40 miles per day
Had to bumpstart last week after being stood for two days which pissed me off.
Loads of good advice on the forum for this issue but I think ultimately if all the electrics check out okay, regular trickle charging is the answer.
Red Thunders idea of switching the lights off will help, I must admit when the battery is struggling to turn the engine and the headlamp and tail lamp are on it does piss you off.
Just recently returning to biking I was used to having kick starts on my bikes, no problem with starting then!
Do you have an alarm fitted, because that drains a bit of juice as well ?

 

Hi d-basser, if it really was only the cold-4°c. Try boiling the Kettle putt some rag around the battery. Pour hot water on. Give it a few minutes then try starting ?.. Or get the jump starter pack with lithium battery. my boss has one he jump started his bus with it (24v but hooked up to weakest battery) it worked fine and you can charge them off 240/12/USB voltages.