Acebeam D20 2.0: Compact flashlight for deep-sea divers with USB-C battery

Acebeam has announced the D20 2.0 Dive, an improved version of the D20, which is also suitable for diving. The range in particular has been improved. However, the lumen values have been reduced and the light is more concentrated, resulting in a range of between 239 and 500 meters. But these are figures for use above water.

As is so often the case with Acebeam, the maximum output is only available for a limited time. The 500-meter mode ends after 60 seconds, after which the lumen value drops from 2,200 to 1,000 lumens without any range specified. The D20 2.0 is then said to last for 2:15 hours. At 530 lumens (and thus a range of 239 meters), a maximum of 5:30 hours is possible. An SOS flashing mode is available for 4 hours and 30 minutes. These specifications refer to a cold 6,500K LED. There is also a variant with 5,000K, which is around 10% weaker in some areas.

The flashlight is now charged via USB-C instead of micro USB. However, the flashlight itself does not have a charging mechanism. Instead, the 21700 rechargeable battery has to be removed from the waterproof body and charged externally. However, a charger is not absolutely necessary, as Acebeam has integrated the charging electronics and USB-C socket into the battery. 

The battery itself offers quite a lot of capacity with around 18.9 watt hours, although nothing has improved here compared to its predecessor. However, there are now 21700 batteries with a capacity of 21 watt hours. Before using these with Acebeam, however, you should check compatibility. In our review of the T35, Acebeam did not adhere to the standard for the dimensions of the 21700 rechargeable battery.

In terms of waterproofness, Acebeam allows diving depths of up to 200 meters. Weight and length specifications are not yet available. However, it should be comparable to its predecessor, which weighs around 130 grams when empty and is 14 cm long.

The flashlight is offered directly by Acebeam for $129.90.