Personally i’d spend the extra $ like @treenutter said.
Some other things to consider for anyone else who stumbles across this - while this is a “compact” and more basic charger for less $ - it’s also missing a lot of the more useful features and ease of use. Like an LCD and AC/DC power supply.
The LCD to change settings on the B6AC (and v2) gives you a quick menu to adjust Amps (faster/slower charging) as well as do some diagnostics. I use and like Internal Resistance feature - to see if a cell is going bad, or general health of the pack. That’s pretty invaluable IMO - especially when trying to troubleshoot a suspect pack.
Add in the temp sensor option of the B6AC (and iCharger and others) (shuts off if temp sensor exceeds a set temp), which is extra cost for the sensor ($5-10), but a great way to ensure no thermal issue on a pack equals a fire. Even in your lipo bag or other fireproof container.
So before you go bottom-dollar cheap equipment, consider how critical this process is to safely charge your batteries. I don’t think everyone needs an iCharger (though i love my 306b), but quality equipment to make sure you are charging safely is definitely worth a bit extra $ IMO.