Disclaimer: This review is for the first generation Cellink Battery B which has a main battery connection. The current 1.5 gen Cellink B has an ACC only connection and a slightly increased capacity.
We don't usually do this, but based on the questions we've received, we figured it would be useful to do a comparison between the various battery packs we carry. Battery packs are increasingly popular as a replacement for the traditional hardwiring kits as they offer additional power for your dashcam when the ignition is off beyond the vehicle's own battery. The battery packs we will be looking at are the Cellink Battery B, the T-Power Plus ALPHA, and the Lukas Battery Pack.
Pictured left to right: T-Power Plus Alpha, Lukas Battery Pack, Cellink Battery B
Between the 3, the Cellink Battery B has the largest battery capacity, it can power a dual channel dashcam such as the Blackvue DR650GW for up to 18 hours. By comparison the T-Power Plus ALPHA is good for about 10 hours and the Lukas about half that. The Cellink's lithium iron phosphate battery should give it an advantage in terms of durability and by our own customers' accounts has been the most reliable. T-Power uses a Samsung lithium ion battery which tends to not be as durable as the one found in the Cellink and Lukas is quite tight lipped about the type of battery in their battery pack.
When using these battery packs, it is very important to consider how long it takes to charge the pack back to full. Being that the Lukas has the smallest capacity battery, it might be easily assumed that it charges the fastest. However this couldn't be further from the truth, the Lukas battery pack takes an agonizing 3 hours to charge completely. The T-Power, with its 10 -14 hour battery life, only takes around 30 minutes to charge to 70% and an hour and a half to charge completely. The clear winner however is the Cellink, which only takes an hour and 20 minutes to charge completely.
We're not completely sure why the charging times are so dramatically different and the complete reverse of what one might expect, but we suspect the Cellink's wiring has something to do with it. The ACC cables of the Cellink are of quite a thick gauge and likely helps it charge quicker. That being said we don't have a clue why the Lukas is so much slower but it might have something to do with lower quality internals
Although this may not be a factor everyone takes into consideration, it's always worth mentioning, particularly if you're mounting the battery pack in a location that's visible. The Lukas is significantly smaller than the other 2 battery packs and has a fairly sleek design. The Cellink Battery B is quite a sizeable battery pack and doesn't have much going for it in terms of looks in our opinion. Overall we prefer the T-Power Plus for design as the materials feel more expensive and it's a fairly sleek unit.
One reason we strongly prefer the Cellink over the Lukas and T-Power is the way these battery packs function. The Lukas and T-Power work as a backup after your vehicle's battery has drained to a certain point. The danger with this is that during the time your dashcam has switched to being powered your battery pack, your vehicle's battery has already dropped to a low voltage, and because there are other drains on your vehicle's battery it may drop to an even lower voltage. The difference with the Cellink Battery B is that when the vehicle is switched off, the dashcam is powered by the Cellink first and until that is drained completely it will not use your vehicle's battery. This is less of a strain on your vehicle's battery and is one of the reasons why the Cellink is our best selling battery pack.
Add to that the fact that the Cellink is the most powerful battery pack and we have a clear winner in this comparison. The Lukas really doesn't add much compared to your vehicle's internal battery and for that reason it's out, and as nice as the T-Power is, it just doesn't have the durability, performance, or functions of the Cellink.