pingbattery.com

[pwbset]

Surprised there hasn't been wild, crazy celebration with the opening of Ping's web store finally. Nice work Ping!

http://www.pingbattery.com

Interesting to note BMS cutouts are pretty low (lower than some here might expect based on some recent posts). Also neat that he has a cheaper 8ah pack option that's really lightweight and.. well.. cheap. etc. etc.

Still... if only he had a better BMS and cells that could do even 3-5C sustained and handle series/parallel better. At least he has identified and captured his economy flatland/urban rider market niche really, really well. He just needs a high power mountain climber pack to round out his inventory! Anyway... kudos for Pings business acumen!

 

[Patriot]

Not bad. He has the 48v/20ah for $723 incl shipping. One can pick up a full pack whenever we need to now, without having to fight other bidders.

 

[dogman dan]

Where have you been? You'd still be bidding? We tried to make it so everybody knew to just email him and order a pack. I see the same bms cutouts that have allways been there. On the small packs it has always been pretty low, and for good reason. The cells are fine, but a 60 amp continuous bms would be nice so you could get a 30 ah pack for the x5 motors. For the mountain climbers, PSI or such is the way to go, but if the hill is long, you still need to pack a lot of amp hours anyway.

Way to go Ping! Ebay is leaving more and more people with a bad experience. Now we can just send em to your site and they won't have to see those 18650 packs.

 

[docnjoj]

Those specs look good to me! 40 amps at 48 volts is almost 1000 watts. Thats not Dr Bass territory, but more than enuff for lil ol me! It was enough to make my Bafang gears mush!
otherDoc

 

[snowranger]

40 amps is over 1900 watts.

 

[ty cohen]

I see the same bms cutouts that have allways been there. On the small packs it has always been pretty low, and for good reason. The cells are fine, but a 60 amp continuous bms would be nice so you could get a 30 ah pack for the x5 motors. For the mountain climbers, PSI or such is the way to go, but if the hill is long, you still need to pack a lot of amp hours anyway.

.

can you explain this a bit for me?

Can a 10 or 12ah battery climb up a 5% hill for 2 km at 20kph without cutting out (minimal or no pedal assist)? Was thinking of a 36v10ah or 36v12ah batt to do this job.

 

[dogman dan]

It depends on the motor. In general a 500 watt motor needs a 20 ah battery when using the 1 or 2 c cells like pings or cammys etc. The idea is to keep the discharge rate low enough to protect the cells. The small sise packs can put out less amps than a larger one without going above 2 c. For most of the packs I have looked at the specs for, the cut off is generally about 3 times the ah sise. So a 10 ah will have a 30 amp cut off, which for that sise is 3c. The max continuous is usually 2c or 20 amps in this case.

If you look at the cycle life test data, that is only 1c discharging, so to get the same lifespan, you need to keep the average discharge rate at 1c or close to it. That is below 10 amps for a 10 ah battery. Only the really small motor can do that, like 250 watts. Adjustments to the bms can be made to raise the cutoff amperage and run a bigger motor on a smaller pack. Just know that you may get a lot less cycles if you choose to improve on Pings engineering.

For some folks using the battery up quicker is not a problem, they plan on getting other batteries soon, or don't ride far. For me, I ride at least 300 miles a month or more, usually at least 15 miles each trip. I want the battery to outlast several ebikes, so I recomend the 20 ah sise for everybody. Having too much range is not a bummer, and it is worth the money to have a reliable pack.

 

[ty cohen]

It depends on the motor. In general a 500 watt motor needs a 20 ah battery when using the 1 or 2 c cells like pings or cammys etc. The idea is to keep the discharge rate low enough to protect the cells. The small sise packs can put out less amps than a larger one without going above 2 c. For most of the packs I have looked at the specs for, the cut off is generally about 3 times the ah sise. So a 10 ah will have a 30 amp cut off, which for that sise is 3c. The max continuous is usually 2c or 20 amps in this case.

If you look at the cycle life test data, that is only 1c discharging, so to get the same lifespan, you need to keep the average discharge rate at 1c or close to it. That is below 10 amps for a 10 ah battery. Only the really small motor can do that, like 250 watts. Adjustments to the bms can be made to raise the cutoff amperage and run a bigger motor on a smaller pack. Just know that you may get a lot less cycles if you choose to improve on Pings engineering.

For some folks using the battery up quicker is not a problem, they plan on getting other batteries soon, or don't ride far. For me, I ride at least 300 miles a month or more, usually at least 15 miles each trip. I want the battery to outlast several ebikes, so I recomend the 20 ah sise for everybody. Having too much range is not a bummer, and it is worth the money to have a reliable pack.

thanks. I am planning on picking up the Nine Continents kit from ebikes.ca as they are only 2 kms away from me. But I would like to get a Ping battery. However, I'd like to keep costs down (like everyone else )

 

[dnmun]

ypedal mentioned he has too many batteries and wants to get someone to buy his 48V20Ah headway pack that is coming in the group buy. he also has some extra free cells in that lot which he can't use because he is already swimming in batteries. there may be a charger with it too, but it costs extra as i recall.

 

[docnjoj]

40 amps is over 1900 watts.

Damn man U are right! No wonder the gears may have gone! But I've been so gentle with them! Really! I better cut that battery in half!
otherdoc

 

[marvingalaxy]

When your spokes turn to radial Jacob's Ladders, it is time to back down on the throttle, Doc.

 

[docnjoj]

Nah! I wish it happened that way! Between me and the trike and the new Ping batt there is about 320 lbs to get rolling! I like the analogy, though! I really am gentle and always pedal to startup! No, it was just their (the gears) misfortune to be on my trike at that time!
otherDoc