Valiant Roamer & SLA batteries

I'm now the proud papa of a used British "Valiant Roamer", courtesy of EBay: Never heard of these until someone asked about one in SERVO's "Mr. Roboto" column. This is the first version AFAIK.

It uses a classic 6V SLA battery, which I'm prepared to replace. These 4A types can be found online cheap, until you add shipping for such a heavy battery. Home Depot has these for $8.69 (and several other SLA types), with free ship to your local store.

These batteries aren't high tech, but they are still useful for some robots. Maybe not flying drones. :)

Chargers can be had for as little as$4...
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