Is it OK to use 14A 6V battery for R51/3?

[schrader7032]

When I got a battery with no acid, I just took it to my dealer. I can see they might not just give it out, but finding a vehicle business should be able to fill a battery and start the charging process for a small amount of money.

[Darryl.Richman]

If you get any of the sealed batteries, there is no need to mess around with acid. If you do have a dry lead acid battery, you can purchase the acid from an auto parts store or even from Amazon.

[TaosTwinCam]

Get a period correct empty battery box and a 5amp AGM battery from Mike at vintagebeemerparts These look correct and the AGM battery will last years without maintenance. These fit all BMWs, pre-war through early Earls bikes.

The lid is larger than it looks in the photo. It fits the box.

[wa1nca]

https://vintagebeemerparts.com/6v-5a-ba ... 218042100/

[johnstas617]

For those who have trouble getting the aftermarket batteries into the original box :

I designed and 3d printed a larger box with a similar design but larger that can fit new batteries.
I fitted 6V 14Ah battery with no problem.
12V 7Ah battery can be fitted inside too.
The inner dimensions are : (mm)
155 H
70 D
100 L

Note - it does not come with a rubber strap NOR BOSCH logo.
If anyone is interested - PM me for price and shipping.

[bm68andreas]

I am interesting for your battery case...
what's the price please ?
regards Andreas

[johnstas617]

Hi

It's 70$ + shipping
PM me if you are interested.