It seems that Vectrix has not (or can not) come up with a viable alternative to the Nimh cells.
With many of us coming to the end of our warranty period and the reported US$5000 replacement cost of a new pack, I have been watching the posts about replacement packs. Not keen to throw money at Vectrix for poorly resolved cells/BMS in their existing catalogue.
Replacing individual dead sells with secondhand cells will only keep our bikes running so long.
I note that 40Ah Thundersky cells will be problematic to fit in the available space. I cannot get a good quote from our Australian KOKAM dealer, so where to now? A123? Too expensive. Valence? Won't fit and too expensive.
I have been in touch with and have a quote from a manufacturer called Realforce of Zaozhuang City, Shandong Province, China.
The price quoted is $3477 (I assume US dollars) for a nominal 125V LiPo4 pack of 40Ah capacity and includes BMS and charger. Postage would be extra and larger orders would attract a discount. I asked for a charger as tying in the OEM charger with a third party BMS is beyond my ability.
The pack is sized to fit a Vectrix battery bin, that is 230mm by 700mm and 330mm deep, the weight is quoted at 57kg, some 33kg less than the OEM pack and an extra 10Ah increase in capacity. I have asked for a nominal 130A constant load and a peak of 180A. The charging will take 6 hours and is a constant voltage, constant current type of 230V AC input. Size and weight of charger was not included by Realforce. Life of the pack is quoted at 1500 cycles to 80%. Pack consists of 40 cells of 10Ah in series with 4 such strings in paralell.
So, my question to the learned EV community is, does anyone out there know of Realforce and are there any other firm quotes for replacement packs?