Author Topic: new battery  (Read 392 times)

Offline Angus

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  • The A7
new battery
« on: 05.09. 2018 16:32 »
I take after the country of origin of my name and hate spending money on things that appear expensive for what they are. So I have a friend in the mobility trade and after talking to him I fitted an ES12-6 MK-Battery to the A7 early this year. It has so far been great, in fact it has actually cured the poor lights problems I was having (don’t have a clue why). It has stayed charged fine with a DVR2. So I have today fitted one to the A10 old style regulator and we will see how it performs.
It claims to be a 12 amp hour battery which is marginally more then then the various other batteries that I have purchased and or seen to date and it can be purchased for between £20 and £30 so is about half the price 2 Cylons, with a little more power. It is part of a range that are put into Mobility scouters which can be bounced around quite a bit (like our bikes).
The disadvantage is the dimensions are 151x50x99mm so they are a very tight fit height wise in the battery box. In fact they don’t quite fit as the lid will not close properly, probably about 1-2mm to high but its all under the seat and out of site so I don’t think it has any impact.
I no nothing about electrickery so am I missing something
1961 A7 since 1976
1960 A10 Gold Flash Super Profile Bike
1958 Matchless G80 Project
1952 Norton Model 7 Plunger (becoming a project)

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Re: new battery
« Reply #1 on: 06.09. 2018 21:09 »
G'day Angus.
It's just an AGM battery. I've been running smaller 4 amp jobs in both my BSA's for years. They hold a charge for much longer than the old lead acid. And if you lay the bike over you won't spill the acid all over it.
Luv'em.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
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Online RDfella

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Re: new battery
« Reply #2 on: 07.09. 2018 15:44 »
This is where cheap is good. I find modern batteries far less tolerant of lack of use than the ones made decades ago. Like the battery for my Firestorm - costs a small fortune and only lasts a year. I use 6v lead/acid inside an old black case on my old bikes. I used a sealed 6v of the type you refer to on my DOT bike when it was on the road, but that was non-charging and only for the brake light. Not keen on them otherwise, as I find them a bit fragile, in that they won't tolerate too many amps going in or out. Careful they don't overheat if putting on a charger.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

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Re: new battery
« Reply #3 on: 08.09. 2018 09:58 »
G'day RD.
I've never had a problem with an AGM. Are you thinking of a Lithium? They don't like what you describe. Bikes eat them very quickly.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
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Re: new battery
« Reply #4 on: 08.09. 2018 17:39 »
No, not lithium. One I have in front of me is Yuasa 6v, 4ah, part no 815-329. Had several and found they fail if you try to put in or draw out more than an amp or two. Shouldn't technically be more than 10% of capacity, so how they'd live on a bike with headlights and charging I have no idea. On my DOT it was total loss, just for the brake light and charged as necessary at about 1/4 amp. They just don't have the plate area that other batteries do - at least that's my theory. Why I always use traditional 'wet' batteries.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.