Ok mate good info thanks. But will a cheaper blender (not a datex) equalise  2 48v batteries regardless of voltage level or do they need to be equal voltage beforehand. I?m trying to figure exactly what the datex does as opposed to a (much) cheaper blender 😂

To return to this question, I?m going with the cheaper option because the batteries are both 48v. But I wonder will this still increase performance the way Datex2 claims to, or just battery life? Will both batteries charge at same time? I?ve always been told you should only run parallel if the batteries are same brand, capacity, age etc? Maybe this only applied to the lead acid being discussed at the time?
Thoughts appreciated 👍

Thanks for the warning. Unfortunately I didn?t see it and did exactly as you said! Luckily it hasn?t caused any issues the brake pads are now fully adjustable again having bought a cheap caliper from eBay and it hasn?t given me any trouble despite not having the bearing and spring now.

I?ve worn out my rr+ motor using top speed with an Eggrider every day and I?m looking to swap it out for a 1000w motor to go with an additional battery. I know it has to be z916 connection and that the cable is on the left. Anyone know of a suitable like for like replacement?

Thanks for the info Peter. No need to pay over the odds for fancy gadgets I guess! Now I just need to find one for sale on my side of the pond. 

A better question would be, what is the best value battery blender for a second battery on a rad runner plus with an EggRider display?

Thanks

I?m having a Samsung 48v 19.5ah battery made up to go with my 48v standard rad battery on rr plus. When it comes to blenders, can anyone tell me the difference between the Datex2:

https://biggamebikes.com/product/datex2-parallel-battery-adapter/

and the much more wallet friendly VGBEY:

https://www.amazon.co.uk/VGEBY-Electric-Accessories-Discharge-Converter/dp/B0BZHLJQBC/ref=pd_aw_ci_mcx_mh_mcx_views_0?pd_rd_w=8NfX8&content-id=amzn1.sym.6466ed1c-11ca-4b0b-9aca-60e7ab0b0c4d%3Aamzn1.symc.acfafb1d-071f-4fdf-beff-aca206a47be9&pf_rd_p=6466ed1c-11ca-4b0b-9aca-60e7ab0b0c4d&pf_rd_r=Z0874WA0A32ZTCZF3G4F&pd_rd_wg=Oqlqb&pd_rd_r=564fc256-0e67-4976-8407-6f48a374d573&pd_rd_i=B0BZHLJQBC

Thanks!

Does anyone know where I can find one of these? Rad and Tekro are being unhelpful. Or any ideas how to fashion a replacement even?