WPL C24 slow crawl

Amazing slow crawl setup: 2$ esc, 2$ usb tester, receiver, 5$ 1S battery, everything else is stock. Usb tester is a cool gadget for small rigs: it shows current voltage, current amps, time online and mahs used, supports 1s and 2s, I don’t know why there is no such tool dedicated to RC, but it’s not too difficult to replace stock usb connectors with JSTs, than simply put this tester between battery and esc of any of your rigs, quick and easy. Also 1s battery provides much better control and modulation than 2s, I wonder why it is so rarely used this days, seems like a perfect fit for 18 and 24 scale rigs. Esc: https://m.aliexpress.ru/item/32904941021.html?spm=a2g0n.productlist.0.0.722251f4xSSn3Q&browser_id=5edc86d6dfd44d9fa782a061e001cf6b&aff_trace_key=&aff_platform=msite&m_page_id=bbtgqzquhccavxsv17c13f17efa65e818ed60ee9cf&gclid= USB tester: https://m.aliexpress.ru/item/4000037898130.html?spm=a2g0n.productlist.0.0.6f6d66ccvOLbW1&browser_id=5edc86d6dfd44d9fa782a061e001cf6b&aff_trace_key=&aff_platform=msite&m_page_id=bbtgqzquhccavxsv17c13f2a100b0abfb471fac5cb&gclid=