6-Volt Batteries for Slash-2 BMW Motorcycles
by Jeff Dean
Batteries Plus stores sell an inexpensive AGM sealed battery that I use on all my slash-2 BMW motorcycles. I have found that they hold their charges better than any lead-acid battery I have ever used. The two-pin “S” connector that comes stock on the battery allows you to disconnect the battery in seconds for service or for attachment to a battery charger. These batteries also have an in-line fuse, an invaluable addition to your otherwise fuseless slash-2.
The Werker is an older version of the battery, shown on the left, below. Currently, Batteries Plus lists the identical Ray-O-Vac battery on its website. It does not matter which is in stock because they are the same battery.
To attach the battery to your motorcycle, you need to replace the stock leads with a short “S” connector wire, which is available at any Radio Shack or electronics store.
 
The photos below show the Werker battery mounted in an R60/2. The photo on the right shows the connector wire needed to complete the installation. Cut the connector wire in half and then connect the half with the exposed pin to the motorcycle's positive lead on its harness (the covered pin from the battery is the plus wire).
Because the Werker type battery is a little shorter than the stock battery, an additional pad under it may be necessary.
 
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