Classic bike battery

Author
Discussion

peteA

Original Poster:

2,735 posts

248 months

Tuesday 12th November 2024
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Ordered a new 6 volt battery (Yuasa lead acid type) for my dad’s triumph T21 classic motorbike - arrived via post ‘dry’ which is standard practice? Instructions were / are to get the battery ‘filled locally’…which is where the issues start?

It’s our understanding that the battery needs to be filled with sulphuric acid (can be topped up / maintained with distilled water but not the initial fill) - the issues is where? We’ve tried googling / searching but nothing?

The sulphuric acid cannot be posted, we’ve tried that too!

Surely there must be a way? We can’t be the only ones in this situation.

Thanks in advance for any suggestions / help.

tvrolet

4,542 posts

296 months

Tuesday 12th November 2024
quotequote all
Not much help on your case, but every time I’ve ordered lead acid batteries there has been a separate sealed bottle with the acid in it.

But even in old bikes I’ve switched to new fangled gel batteries. And on the real old stuff where the battery is exposed you can get fake battery boxes that look like the battery and you put a new smaller battery inside.

SteveKTMer

1,197 posts

45 months

Tuesday 12th November 2024
quotequote all
Usually comes with the acid, I bought one last year for my 1976 CB750 and it came with acid. Bike shops and garages don't carry acid for topping up anymore, I doubt you'd find that outside of a chemical supplies company.

srob

12,102 posts

252 months

Tuesday 12th November 2024
quotequote all
tvrolet said:
But even in old bikes I’ve switched to new fangled gel batteries. And on the real old stuff where the battery is exposed you can get fake battery boxes that look like the battery and you put a new smaller battery inside.
Yep, same here.

Panamax

6,077 posts

48 months

Tuesday 12th November 2024
quotequote all
I think you'll have to take it to a local battery specialist who can fill it for you. Not a shop or garage, a real specialist.

OutInTheShed

11,195 posts

40 months

Tuesday 12th November 2024
quotequote all
Regulations about supplying acid to the public changed a few years ago.

As a result, most battereies are now supplied filled. They probably arrive that way at most retailers, so it's best to order from a seller with a high turnover.
If you can't get it filled, saend it back and buy from someone like Yuasa UK or Tayna.
Or look at gel lead acid batteries or even Lithium.

Sometimes, they would send you much more acid than you needed, so asking around local bike enthusiasts you might just find someone has a bottle on their shelf.

moanthebairns

18,424 posts

212 months

Tuesday 12th November 2024
quotequote all
Send the battery back, its going to be a ball ache trying to get Sulphuric Acid in the concentrate and volume you require from a wholesaler, most wont deal with a member of the public, you'll need to have an account and go through vetting to get on their books. I buy a fair share at work as cleaning reagents for work in the water industry, if its anything like the price we pay for some acids it'll be the price of the battery again.

Biker 1

8,134 posts

133 months

Tuesday 12th November 2024
quotequote all
Maybe a long shot, but you might be able to get this via a garage: https://surechemicals.co.uk/vehicle-care-maintenan...

TwinKam

3,321 posts

109 months

Tuesday 12th November 2024
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If the seller didn't mention that it would be supplied dry, send it back, as it's not actually a battery in its current (sorry) state, hence it's unfit for purpose.
Plenty of suppliers out there who will supply you with a ready to use battery, personally found Tanya to be excellent.

Biker 1

8,134 posts

133 months

Tuesday 12th November 2024
quotequote all
+1 on Tayna. I have bought loads of batteries for various vehicles at work. Good delivery, usually next day. Decent packaging & does what it says on the tin.
Deffo recommended & I don't work for them.....

peteA

Original Poster:

2,735 posts

248 months

Tuesday 12th November 2024
quotequote all
Cheers for all the comments / suggestions - we’ll look into a another ‘filled’ battery option and try tayna.

bimsb6

8,420 posts

235 months

Wednesday 13th November 2024
quotequote all
OutInTheShed said:
Regulations about supplying acid to the public changed a few years ago.


Or look at gel lead acid batteries or even Lithium..
Can you get either of those in 6v ?

OldGermanHeaps

4,636 posts

192 months

Tuesday 26th November 2024
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bimsb6 said:
Can you get either of those in 6v ?
Seen a few lifepo 6v batteries advertised. Gel ones too.
Not sure if they are any good, but they were pretty cheap for a punt.
Last time I was faced with this i fitted a 12v coil and stator, as the 6v headlight was beyond useless.

stang65

444 posts

151 months

Wednesday 27th November 2024
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I few years ago I bought one dry and phoned around the local bike shops until I found one of those who was willing to fill it for £5. So before returning it have a phone round and someone might help. You'll struggle to buy the acid but they may fill your battery for you.

I wouldn't bother with a Lithium battery on a classic bike. As I understand it Lithium batteries require quite stable charging, which I doubt you will achieve with an old dynamo or magdyno (don't know what a T21 has for charging).