The packs are charged with a Hyperion charger hooked to an old Dell running Windows Xp and the Hyperion software.
Then connected in parallel and discharged.
The 18650 pack would be way overloaded if connected by itself and would not work well at all.
The A123 pack will run the bike by itself but only for about 18 miles.
Together they will top 40 miles.
These are screen shots.
The A123 11s 3p pack charged after a 14 mile ride.
The 18650 laptop cell 10s 4p pack after a 14 mile ride.
The A123 pack after a 40 mile ride.
The 18650 pack after a 40 mile ride.
This is with light pedaling since it is a fixie.
The cells are about 6 years old. 2006 was a good year for batteries !
The 18650 pack is a B pack for sure made with the 2600mah cells I had that measured about 2100mah when tested.
I rated it at 8300mah 37v.
The A123 pack is made of 2300 mah cells that also tested at about 2100 mah.
It is about 6300 mah at 36.3v.
Notice at 14 miles the A123 pack is still almost fully charged.
Max load on the 18650 pack is about 16 amps.
Max load on the A123 pack about 35 amps.
The smaller 18650 pack has more power than the A123 pack but the A123 pack can deliver the higher amps needed at start off and going up hills.
Going down the hills the 18650 pack charges the A123 pack.
This works fine and is setup for the small hills and stop and go traffic around my house where I ride.
40 miles straight no stopping going up hill would not work so well and would require a different setup.
The controller was listed as a 40 amp 800 watt controller.
When I got it the part number was correct but it had a sticker that said 60 amps and 1000 watts.
The Watts up meter shows that it will deliver 55 plus amps when needed.
Takes off like a jack rabbit !