I request the seller an unusual triangle(combined charging & discharging) connector because I can use this battery easy installable & removable. The seller made it for me and it works fantastically. I can exchange original battry and new one in rotation. I am not for sure this battery has 30Ah capacity(some reviewer found it 22.5Ah) but when I performed short test driving of my EV bike I felt its strength and long duration. The original battery of my bike has only 10Ah, I can ride only 16km (at 40km/h). I expect this new battery may push it about 40km. I am going to test long range driving this weekend.
I performed a long range test. One way 16km & return with 32km. I still had 48.9V. The figure told me that I can hve a total rang of more than 64km. Fantastic!!!
I placed four orders using AliExpress.com. All the items arrived however, the tracking of every order did not work. AliExpress's shipping application that is not working. Form my battery order which includes chargers the issues is that the charger line cord is not described well enough to indicate the cord is the European standard and not the US standard. That is a big deal since they look similar but the charger line cord will not work in the United States. The battery is very fragile. The "box" uses thin plastic sheets held together with masking tape. Not a box at all; the blue skin is not flexible hence it will shatter under stress. I needed to add vinyl tape to support some damage i gave one of my two batteries. The battery weight is not 4 kg, they are 9 kg, The good is the battery appears to be providing the stored energy I expected. Over 120 miles thus far. For my application the range (hilly environment) is over 50 miles.