🔌 Tenergy TN136 4 Bay Smart 9V Charger Review

This little charger works great! Not only does it charge 4 batteries at once, but if you insert the batteries correctly, they snap securely in place and won't fall out. The charging indicator is red when you first connect the 9V battery to charge, and when it is fully charged, it changes color and stays green. It's small so it doesn't take up much space wherever you choose to place it. The charging cable is about 3 meters long. I also found that the battery charges (all 4 at once) in about 2…

I need to be able to charge 4 9V NiMH batteries at the same time for my smoke alarms. This model is a huge improvement over the multi-battery charger I bought at least 8 years ago. My old charger had a capacity of 29V but didn't recognize the battery level for 9V. The old one was based on a 14 hour timer. It is great! Based on my 250mA battery rating, I can charge all four in under 3 hours. I also really like that each battery has its own gauge and battery level sensors. The indicator is only…

I have seen several universal chargers that can charge 9v but be aware that these chargers (including some Energizer models) take up to 10 hours to charge . This device charges a fully discharged 9V in less than 3 hours. Very simple operation, plug in. A red light is charging, a green light means charging is complete, no light (if you have a battery in the slot) means the device is off. The device will turn off automatically a few hours after detecting the battery is fully charged to prevent…