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Top 5 Positive Customer Reviews for 12v dc current 2a
The portable UPS works as expected. All the output slots tested and work right. The consumer cable included and works. Didn't test the capacity yet. The seller wrote incorrect destination address (that made it difficult to receive the item). However, the seller responded with a gift for such mistake and troubles it caused. So the issue was resolved the right way.
it is working according to description. The default time for delay is about 3-4 seconds. So you plug in to the wall and it is switching polarity every 3-4 seconds by default.