Another "Ping Battery Is Awesome" Thread

[Riles]

Hey guys and gals,

I just wanted to chime in and share my experiences with Ping. He runs one of the best businesses I've ever dealt with so I felt everyone should get to hear my experiences with him and his batteries. I ordered a 24v 15ah v2.5 battery in 2009 from him, and after a few quick emails he agreed to build it to fit in the Currie eZip Trailz battery box. It arrived quickly and fit nicely. I couldn't believe the performance of this battery- with it, my wife gets about 2mph more speed than I do on my SLAs, but it's the range that really counts. At the end of last season (Septemberish), my wife and I did a 50 mile trip along a PA riverside trail, 25 miles each way. We did the first half solely on human power, but decided to go electric on the way back. We rode the first 6 miles at full speed until my formerly-10ah SLAs cut out. Then I pedaled and my wife matched my speed of roughly 10mph the rest of the way. Would you believe it- her battery made it the whole way! I'm no math whiz, but 25 miles out of a 15ah pack is just fantastic, especially after 2 seasons of real use. Long trips like that are rare for us, we usually stay in the 10 mile range to ride to stores and such, but its nice to know that power is there if we need it.

I just ordered another 24v 15ah pack today from Ping, and he answered an email within 1 hour. You'd swear this guy was in the USA with those quick replies. We did have one problem- the fan in my wife's charger failed. It still runs, but screeches very loudly. Ping agreed to toss in a free replacement fan with my order, awesome!

I just had to give him credit- our first pack is still going strong into its third season and well be getting a second pack in a few weeks. This summer will be all about long trips, maybe a few more 50 milers and hopefully something even further. We are blessed to live in an area that has many converted rail bed bike paths- they are so smooth you could literally ride all day long.

 

[dnmun]

you can oil the fan. do you know how to do stuff? take the screw out under the rubber feet, open the case, note how the silicone grease on top of the transformer is mashed into the heat sink cover, i think you can unplug the fan to work on it, pull the decal off the end by slipping a razor/knife under the decal and peel it up with the adhesive intact, remove the rubber plug and add some light weight oil, some people recommend some fancy stuff from radio shack, i use sewing machine light oil, put the rubber plug back on, roll the decal back down, reinstall fan, reinstall top heat sink cover making sure no wires get pinched on top of the transformer so the heat sink silicone makes good contact again, assemble with the screws and put the rubber feet back on, voila, now you have 2 chargers.

if your order has not left china, ask ping if he will sell you a 5A charger instead or also, the $59 is worth it.

 

[el_walto]

Agreed. I think i have about 6000km on ping 48v 16Ah battery. I'll have to run it down one of these days and see how many AH it gives before cutoff. I've only ran the battery to cutoff once before, as i charge it up after every ride.

 

[999zip999]

Ping's, Customer service is a # 1. Plus he will not give up on you. It's o.k. you can do it. Thanks PING.

 

[moostrodamus]

yep, my Ping 48v 20 amp battery is awesome. My charger died...ping replaced it . Going on about 9000km..runs like new.

 

[wineboyrider]

Same here. It's my only really solid battery pack I have right now until I get time to solve my lipo problems (me mostly). I've had a bad bms he sends me another one that bms is bad he sends me another one until it works. He's a good honest business man and builds a good useful commuter bike product. period.....

 

[Rassy]

Wouldn't miss a chance to agree. I've purchased 3 batteries from Li Ping and a BMS for a non-Ping but same as battery. I have the utmost confidence in his batteries and his service. I do always get a little nervous until the "electronics" clears customs and I pick it up at the local post office.

 

[docnjoj]

Yep! Ping rules for service and making good stuff that does the job, at least for my needs.
otherDoc

 

[DimGr]

one question : with each battery pack you order,is it included and the BMS? and if yes can they customize the maximum Amps that BMS can handle?

 

[docnjoj]

one question : with each battery pack you order,is it included and the BMS? and if yes can they customize the maximum Amps that BMS can handle?

Yes each pack has a BMS. Ping, I believe has high amperage BMS that can be put on at the time of purchase. Definitely check with him. pingping227 is his E-mail and you could also contact him through his website. Remember that his cells are really only 2-3C so the BMS will not be the limiting factor for hard use.
otherDoc

 

[DimGr]

one question : with each battery pack you order,is it included and the BMS? and if yes can they customize the maximum Amps that BMS can handle?

Yes each pack has a BMS. Ping, I believe has high amperage BMS that can be put on at the time of purchase. Definitely check with him. pingping227 is his E-mail and you could also contact him through his website. Remember that his cells are really only 2-3C so the BMS will not be the limiting factor for hard use.
otherDoc

I'm planning to buy 2 battery packs of 36V 20Ah and connect them in series that's why I'm asking...I'll contact with him anyway but I would like to read the opinion of users also :wink:

 

[dnmun]

why not ask him if he can build you a 24S pack instead? that gets you up to about 90V and most controllers will not handle that much voltage. maybe a 48V pack would be sufficient, still a lot speed but without as much expense or risk of problems from a serial arrangement.

 

[DimGr]

why not ask him if he can build you a 24S pack instead? that gets you up to about 90V and most controllers will not handle that much voltage. maybe a 48V pack would be sufficient, still a lot speed but without as much expense or risk of problems from a serial arrangement.

I have already reserved a Greyborg RC frame and the battery chambers have exactly the same dimension as the 36V 20Ah Ping.So I was thinking a 72V setup (2 of these in series)...but first I have to choose the controller...

 

[auraslip]

He typically splits the 24s pack up into two separate packs. Basically two 12s packs with one BMS.
He can build them to any dimensions you'd like.

 

[999zip999]

Hay DimGr, Tell Ping what you like, If you are going to put the batteries on the sides of your rear wheel he can make the wiring harness for the balance wires long enough with a connecter or are you putting them in the triangle ? I would read the size and make 2 boxes that size so you can work it out. Don't over amp the batteries. This was why i would blow my bms and a set of cells. So run without a bms, but did the manual check and they stayed in balance. At 40 amps on a 48v20ah it was taking more life out of the battery, but do hold together. Next time I would hold it to 25amps.on a 48v20ah. But it would go 34mph with peddling and a 48t 11t. combo. at 40 amps. So to get the true life hold the amps to Pings limit. Not mine. P.s bike was sotlen 3-26-11. Still looking. Yes it was a spilt pack he said for shipping.

 

[Rifle]

I'm very impressed w/ my new Ping (aside from having to replace the BMS). I have yet to run it down to cut-off. Even when I used 19.9ah it was still sitting at almost 51v! I do have regen, but that didn't seem to give me any noticeable extra AH on my other battery.

 

[K.E.Kopp]

I am sure glad to read the good words here. I have a new Ping battery & charger that are dead just about out of the box. Charger fan bad out of the box & BMS dead after the second charging. I have emailed him but 1/2 a day has went by in Shanghai & no response. I sure hope he makes this right....

 

[Cold-E-Commuter]

Worry not. Ping will make it right. I just ordered a 5Ah charger for my 51.2V15Ah battery (48V nominal) as I have pushed it to its limits (and beyond) a few times and the 2Ah charger takes forever. I have 134 cycles and 2225 miles on it. The last ride was for over 34 miles at speed and I used 15.126 Ah from a 15Ah battery, and the LVC still did not trip. Low voltage was 39.4V. This is a prior email from Ping:

Happy holiday.

Yes, the BMS has the function of LVC. It’s cell based. When any cell voltage reaches 2.1v, the BMS will cut off the power. Cell voltage of LiFePO4 will drop quickly as soon as it gets 2.5v. So, you can also look it as 2.5v. If you want to set LVC on CA, you can just set it same as sla batteries, 40v. Because 2.5*16=40v.

Best regards,
Ping

If 2.1V at "any" cell is what it takes to trip LVC then all cells in my pack are great. 39.4V/16=2.4625. That is after 15.126Ah. How far can I go? Ping will get your back, don't stress about service.

 

[DimGr]

He typically splits the 24s pack up into two separate packs. Basically two 12s packs with one BMS.
He can build them to any dimensions you'd like.

my thought is to send it without BMS,just to have only the balancing wires stand by with connector and buy separately BMS from Headway,I read somewhere here that they're pretty reliable.do you have in mind how many cells has the 36V 20Ah pack?

 

[dnmun]

the headway BMS has developed a bad reputation. i have some 72V headway BMS if you wanna test that idea though. but ping will sell you a pack with the BMS already installed.

the other guy kekopp who said he had a dead battery started a thread but never got back to it, we think his charger just has a loose wire in the connector, but he never replied again on his thread when i asked him to test it a little.

 

[K.E.Kopp]

Updates posted:
http://endless-sphere.com/forums/viewtopic.php?f=14&t=27001

 

[Cold-E-Commuter]

Just received new 5A charger from Ping and tested. No problems in the first charge. What a difference 5A makes over 2A! 3 hours vs 7-1/2 on a 15Ah battery. Shipping was fast and emails answered within 12 hours. The only problem was USPS not updating the shipping information. Went from "Inbound in customs" in San Fran (4/18) to "Out for delivery" (4/20) with no info between (2 days). At least UPS has a better update ritual. USPS, mmeehh, not so much. Look forward to charging faster and easier turn around times. I'll keep you posted.