icecube57
10 MW
This is Icecube57 AKA Christofer Parham at Lipo Connection Solutions. Im doing another round of battery testing of some of the HK lipo again. I need help from the community to bankroll this effort.
I currently have packs on order. I understand peoples reservation about donating money and such. (2) people donates $70 Bucks total. I waited and no one else came forward. So I decided to go out on faith and pull the trigger and hope you guys come through once I show I was serious about this testing I bought the following packs to get us started.
Turnigy Graphene Professional 3000mAh 3S 15C LiPo Pack w/XT60
Turnigy Graphene 3000mAh 3S 65C Lipo Pack w/XT90 (AR
Turnigy Bolt 2200mAh 3S 11.4V 65~130C High Voltage Lipoly Pack
B-Grade 3000mAh 2S 40C Lipoly Battery (AR Warehouse) 1
Multistar LiHV High Capacity 3000mAh 3S Multi-Rotor Lipo Pack
Turnigy nano-tech 3000mah 3S 25~50C Lipo Pack (AR Warehouse)
Turnigy 3000mAh 3S 20C Lipo Pack (AR Warehouse) 1
Shipment SmartAR Fedex (Zone 4) US$10.98
Total US$174.89
Bonus points used: $9.94
Total After Bonus Points $164.95
My Paypal is lipoconnectionsolutions@gmail.com
If you could donate some funds to help bridge the gap and possibly foot the bill to purchase some more packs that you might want to see tested.
If you like to send me some cells for testing. That would be great also. I know 18650 is all the rage now. I would love to get some small 5P spot welded groups of the latest and greatest 18650 for testing.
My test bench can test up to 70A and plot the cell voltage so we can hopefully do an overlay of the different pack types to see how they perform. I bought smaller capacity sized cells so this will artificially increase the C rate in which they are discharged. This should scale up.
What I want to see is does the 1/4 C rule still apply with these new pack chemistries. Meaning if its a 10C pack is it really a 2.5C continuous discharge. And also how well does the cell hold its load and does it stay above 3.5v a cell for the entire discharge and at what C rating is cell being stress too much and is losing capacity or hitting the controllers LVC due to the voltage sag being too great under said load.Example the cell maybe able to deliver for the first 60% of the cells capacity but its unable to hold a high enough voltage under load to allow you to discharge further.
I also bought a nanotech to see how well the Multistar pack would perform being paralleled with a nanotech. Can you have a Low C discharge pack be augmented by a High Discharge Pack to get better overall performance. You get more Watthours for the price with the Multistar but not performance but If a nanotech could pad the numbers a bit this would be an awesome compromise.
I currently have packs on order. I understand peoples reservation about donating money and such. (2) people donates $70 Bucks total. I waited and no one else came forward. So I decided to go out on faith and pull the trigger and hope you guys come through once I show I was serious about this testing I bought the following packs to get us started.
Turnigy Graphene Professional 3000mAh 3S 15C LiPo Pack w/XT60
Turnigy Graphene 3000mAh 3S 65C Lipo Pack w/XT90 (AR
Turnigy Bolt 2200mAh 3S 11.4V 65~130C High Voltage Lipoly Pack
B-Grade 3000mAh 2S 40C Lipoly Battery (AR Warehouse) 1
Multistar LiHV High Capacity 3000mAh 3S Multi-Rotor Lipo Pack
Turnigy nano-tech 3000mah 3S 25~50C Lipo Pack (AR Warehouse)
Turnigy 3000mAh 3S 20C Lipo Pack (AR Warehouse) 1
Shipment SmartAR Fedex (Zone 4) US$10.98
Total US$174.89
Bonus points used: $9.94
Total After Bonus Points $164.95
My Paypal is lipoconnectionsolutions@gmail.com
If you could donate some funds to help bridge the gap and possibly foot the bill to purchase some more packs that you might want to see tested.
If you like to send me some cells for testing. That would be great also. I know 18650 is all the rage now. I would love to get some small 5P spot welded groups of the latest and greatest 18650 for testing.
My test bench can test up to 70A and plot the cell voltage so we can hopefully do an overlay of the different pack types to see how they perform. I bought smaller capacity sized cells so this will artificially increase the C rate in which they are discharged. This should scale up.
What I want to see is does the 1/4 C rule still apply with these new pack chemistries. Meaning if its a 10C pack is it really a 2.5C continuous discharge. And also how well does the cell hold its load and does it stay above 3.5v a cell for the entire discharge and at what C rating is cell being stress too much and is losing capacity or hitting the controllers LVC due to the voltage sag being too great under said load.Example the cell maybe able to deliver for the first 60% of the cells capacity but its unable to hold a high enough voltage under load to allow you to discharge further.
I also bought a nanotech to see how well the Multistar pack would perform being paralleled with a nanotech. Can you have a Low C discharge pack be augmented by a High Discharge Pack to get better overall performance. You get more Watthours for the price with the Multistar but not performance but If a nanotech could pad the numbers a bit this would be an awesome compromise.