I created a battery cap for 3d printing which anyone can download and print for free. https://www.thingiverse.com/thing:4062261
I posted these in December of 2019, well before they showed up on etsy lest anyone should think I copied them.
If I remember correctly they were about the same, maybe some improvement. The biggest benefit for me was not having to adjust them a couple of times a week like I did with the stock ones. I feel they are worth the money. I would say overall they are better at stopping, because if your going down...
Just as a side note regarding riding up and down hills on a regular basis. I replaced the brake calipers with the JUIN TECH R1 Hydraulic Hybrid calipers. I'v gone over a 1000 miles before feeling the need to change the pads. And I have never had to adjust them in that time which is just wonderful.
I have the 2018 and have the same issues. It doesn't lock but it is hard to pedal. I live in the Catskill mountains and every direction I ride is uphill. You can see in the picture, on yesterday's ride we climbed 1636 feet. Rad says to avoid steep hills or walk the bike on hills you can't peddle...
I have 2 battery chargers and 4, 48v 2018 batteries all purchased from RAD. The chargers will charge all the batteries but the chargers never go green and then they get extremely hot. I have to set a timer for 4 hours and just unplug them. I was just going to buy an aftermarket charger thinking...
I created a battery connection cover for our spare batteries we store in our panniers. I didn't want the connection damaged while riding around on bumpy trails. You can download the file for printing from Thingiverse.
https://www.thingiverse.com/thing:4062261