RV FEATURE
This brush-cutter was rated at 500W , well within the AC50B ' s inverter capacity .
TRULY PORTABLE
The AC50B is small for a power station of this capacity . Measuring just 280x200x220mm and weighing in at just 6.7kg , it is smaller and lighter than the Bluetti AC60 we reviewed in December last year . You should have no problem storing the AC50B anywhere in your car , camper or caravan . The light weight combined with the integrated carry handle makes moving the unit around your campsite effortless . It is very surprising how portable this unit is given its capacity .
PEDAL TO THE METAL
All of this would be pretty meaningless if the Bluetti AC50B didn ’ t perform as expected , and that meant delivering the run time its 448Wh battery promised .
To find out , I put the AC50B through a series of tests , running various devices continuously until the unit shut down , measuring the time it took to flatten the battery and calculating if that met expectation .
The first test was to power the Waeco 40L fridge in my car . I estimated the fridge , powered by the 240V outlet , should run for around 18 hours . After 24 hours , it was still running with one per cent indicated remaining battery capacity . That was impressive enough but it was the next test that really surprised me .
I ran three 240V lights with a total continuous and steady output of 58W . The display showed the approximate run time to be just over six hours . This was very unusual as it was less than the time I would have expected for that load . I let it run anyway to see what would happen . After eight hours , the lights were still on and the battery capacity was down to five per cent indicated . One and a half hours later , the battery finally went flat and the inverter turned off . That equated to 551Wh , around 20 per cent more than the battery ’ s stated capacity .
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