At first glance, the SFK 275EX looks like many other 275-300 amp hour internal BMS lithium iron phosphate batteries. With Bluetooth communications, heating, long cycle life, and a good warranty it seems to compete well with other batteries. But, closer inspection reveals a battery with features above and beyond anything I've seen in similar form-factor and priced batteries. Not only that, it comes with a thorough and readable manual.
Ben Stein is the Managing Editor of the Public Affairs Office, with a focus on a variety of topics. His work has been featured in publications such as Zolmax News, Rumble, The American Spectator, Panbo, and Cerbat Gem. Ben covers a wide range of subjects, including earnings forecasts, stock positions, analyst ratings, and political questions.