Having dealt with Yeili and other Chinese ebike manufacturers for the last 2 years, I am not surprised at the issues being encountered. The stocking of these "parts" for the recall/upgrade of a very specific serialized battery group would be based upon availability of these parts and, an accurate estimate from Yeili regarding all of the branded versions of bikes that are effected by this recall. In addition, not all owners with perfectly functioning batteries would want to send their batteries which renders their bikes useless for an indeterminate period of time. We have no idea how many parts were ordered nor the availability of these parts in this notorious, pandemic induced bike parts crisis.
I am inclined to give a 3rd party like FTH some latitude considering all of the issues with this type of program.
I would give them latitude (and have) if they did things with an ounce of common sense.
I have two batteries, as does just about everyone with these bikes, understanding that they don't want both packed in the same box, great, but they required 2 separate RMA call tags, instead of 1 RMA tag for the two boxes. which presents the exact issue I encountered. Which I knew was going to happen and is why I boxed them separate, labeled them separate, but strapped the boxes together and marked them 1 of 2 and 2 of 2.
they were received at the same time, the RMA numbers where 1 digit different and according to FTH they were to be repaired in the order received My RMA numbers were literally 0009 and 0010 that means according to their numbering scheme I was the 9th and 10th battery in the lineup, meaning there were only maybe 5 people ahead of me.
they received them on the same date and time, signed by the same guy with the same time stamp from FedEx, August 14th 10:14am they were picked up by FedEx on August 13th at 2:30pm
so why were they:
1. Not repaired immediately considering I was so low in the numbering.
2. Not repaired together since they came in together.
3. Not returned together.
4. Not Returned within the 7-10 window they guaranteed.
my bike is my daily commuter, it has been down since August 12th, I was told by "Jennifer" I would have the batteries back before August 19th, then I was told August 28th, Then I was told September 9th (actually received 1 on the 10th), now I am being told maybe September 24th for the second.
7-10 days my ass, that is 6 weeks.
and to make it worse they don't bother to inform you that the item has shipped back AND requires a signature. No tracking, no notification that they have shipped it back, so if no one is home when FedEx comes you're assed out. I was lucky that my neighbor was home when they rang my ring doorbell, I asked the FedEx driver over Ring if he would have her sign it and take it and he agreed.