The Hart 40-volt battery string trimmer is by far the best non-gas trimmer I have ever used. I have a gas trimmer but it is heavy and as I have gotten older I find myself using it less often due to the weight of the trimmer. I thought I would give this trimmer a try and am in no way disappointed. The 40-volt battery seems to make a huge difference in the cutting power and time between charges compared to trimmers I have used in the past that had lower voltages.
The Hart trimmer did just as good of a job at trimming my yard as my gas trimmer. The balance and weight of this trimmer is perfect. I have what I would consider an average suburban yard with a fenced backyard and lots of edging that needs to be trimmed. I was able to do the entire yard without any noticeable drop in power. The trimmer cut well and the design of the clipping deflector did a better job of keeping the clippings from hitting my legs than my gas trimmer. The self-feeding function worked perfectly and I very much enjoyed not having to bump the trimmer to feed new line. It took me 30 to 40 minutes and I wasn't nearly as fatigued as I usually am after doing the same amount of trimming with my gas trimmer. I loved not having to prime a bulb and pull a rope to start the trimmer like I do with my gas trimmer.
There was some assembly required, but it was not difficult at all. A Philips screwdriver is required to secure the two sections of the trimmer shaft together, to attach the front handle to the shaft and to also attach the clipping deflector. Assembly time was less than 10 minutes. The string was pre-loaded and there was plenty to do my entire yard. The process to reload the string is not difficult at all. Charge time for the battery was less than 2 hours, both for the initial charge and recharging after use. The trimmer is much quieter than my gas trimmer, but a little louder than some other battery or corded trimmers I have used in the past. The trimmer speed is variable as you increase pressure on the trigger switch, which is very helpful when trimming around objects that are more prone to breaking the line at higher speeds.
This trimmer would be a perfect option for anyone who is looking for a quieter and lighter trimmer or someone who is concerned about the environment or having to deal with mixing oil and fuel like most gas trimmers do.