I finally pulled the trigger on my battery upgrade. Same UPP triangle hard case, but 14S8P of Samsung 35E cells. This gets me a decent bump up, from 30A to 40A continuous and peak current bumps up to 120A. Capacity goes up too, from 20Ah to 28Ah. :thumb: This was the best option for me to stuff 40A continuous into my frame triangle, and still have the capacity/range I like having.
I've been using my 4 x 4S lipo packs, carried in the small top tube bag, wired in series with my main pack up until now, but my 6S 8Ah Turnigy Graphene lipos showed up today, so I guess I'm switching to 20S. The Graphene lipos are pretty hefty, and one 8Ah 6S pack is bigger and heavier than the two 5Ah 4S lipos. They just fit in each side of the bag, like it was made for them.
I also got a 5A charger, and tested it today after soldering on a new connector. I hooked up my pack, that started at 52.3V, then proceeded to unbox the new lipos (can't believe the fancy packaging on these things). I needed to solder up another XT90 to XP60 jumper so I could charge both packs. They arrived at 3.7V, so I maxed my charger at 14A to parallel charge them (they are rated for 5C charging, but 14A into two packs is less than 1C). I stopped when they reached 4V so I could get a test ride in before dark. My main pack just hit 57V by then, which was really nice to see. I should have upgraded my charger a long time ago!
Anyway, 20S at 30A is pretty fun, so I know I'll really be grinning once the new pack arrives and I have 40A :lol: I can predict a 24S test in the future.
The two 8Ah packs should be good for short to medium rides, so if I'm going trail riding, I can use the main pack until I get to the trail head, and then add the lipos for more power and fun. :wink:
EDIT: I think I had an epiphany while riding around today. I turned off pedal assist a couple of weeks ago, and started using cruise control with pedaling instead, which works well and seems as efficient. For the last week, I've just been using throttle, with slide regen set on the controller, and the CA throttle set to power. Since I like pedaling, this basically was forcing me to develop techniques to mimic pedal assist or cruise control. But in doings to, I noticed that I have a lot more control over the efficiency and consumption. I still like having the other options for a really long rides or when I'm really lazy, but for normal riding around, it seems like I can do whatever I need with just good throttle control. Of course a better throttle may be something I need to consider
I've been using my 4 x 4S lipo packs, carried in the small top tube bag, wired in series with my main pack up until now, but my 6S 8Ah Turnigy Graphene lipos showed up today, so I guess I'm switching to 20S. The Graphene lipos are pretty hefty, and one 8Ah 6S pack is bigger and heavier than the two 5Ah 4S lipos. They just fit in each side of the bag, like it was made for them.
I also got a 5A charger, and tested it today after soldering on a new connector. I hooked up my pack, that started at 52.3V, then proceeded to unbox the new lipos (can't believe the fancy packaging on these things). I needed to solder up another XT90 to XP60 jumper so I could charge both packs. They arrived at 3.7V, so I maxed my charger at 14A to parallel charge them (they are rated for 5C charging, but 14A into two packs is less than 1C). I stopped when they reached 4V so I could get a test ride in before dark. My main pack just hit 57V by then, which was really nice to see. I should have upgraded my charger a long time ago!
Anyway, 20S at 30A is pretty fun, so I know I'll really be grinning once the new pack arrives and I have 40A :lol: I can predict a 24S test in the future.
The two 8Ah packs should be good for short to medium rides, so if I'm going trail riding, I can use the main pack until I get to the trail head, and then add the lipos for more power and fun. :wink:
EDIT: I think I had an epiphany while riding around today. I turned off pedal assist a couple of weeks ago, and started using cruise control with pedaling instead, which works well and seems as efficient. For the last week, I've just been using throttle, with slide regen set on the controller, and the CA throttle set to power. Since I like pedaling, this basically was forcing me to develop techniques to mimic pedal assist or cruise control. But in doings to, I noticed that I have a lot more control over the efficiency and consumption. I still like having the other options for a really long rides or when I'm really lazy, but for normal riding around, it seems like I can do whatever I need with just good throttle control. Of course a better throttle may be something I need to consider