I bought an item that takes 4 D batteries or uses the adapter (sold separately). But they didn't have the adapter. Since I have kept a bunch of adapters from things that have been thrown away, I have a 6 v adapter rated for 150 mA. It's the amperage I am not sure about. The item has a small motor and I'm concerned that the 150 mA is not enough. Advice, suggestions? I know 4 rechargeables will work, but would prefer the adapter.
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