IRC log for #qi-hardware on 20160115

00:54.25*** join/#qi-hardware infobot (ibot@rikers.org)
00:54.25*** topic/#qi-hardware is Copyleft hardware - http://qi-hardware.com | hardware hackers join here to discuss Ben NanoNote, atben/atusb 802.15.4 wireless, anelok and other community driven hw projects | public logging at http://en.qi-hardware.com/irclogs and http://irclog.whitequark.org/qi-hardware
00:54.25*** mode/#qi-hardware [+v infobot] by ChanServ
01:15.14*** join/#qi-hardware jbalthetto (~jbenedett@c-24-3-57-225.hsd1.pa.comcast.net)
01:19.10*** join/#qi-hardware atommann (~atommann@210.3.149.230)
01:31.32arossdotme-planbwhitequark, this site is popular on a  mountain bike forum but is $8.99 for protected and $4.59 unprotected inc worldwide shipping too good to be true/ =fake? http://www.kaidomain.com/product/details.S024110
01:33.23whitequarkdunno
01:37.48arossdotme-planbkyak, thx
04:35.06kyakarossdotme-planb: np
04:48.08*** join/#qi-hardware DocScrutinizer05 (~saturn@openmoko/engineers/joerg)
05:11.22*** join/#qi-hardware sandeepkr (~sandeepkr@111.235.64.4)
07:38.20*** join/#qi-hardware fengling (~fengling@111.198.29.53)
08:15.40*** join/#qi-hardware atommann (~atommann@210.3.149.230)
09:29.50*** join/#qi-hardware pcercuei (~paul@137.71.226.54)
10:32.22DocScrutinizer05arossdotme-planb: http://eu.nkon.nl/panasonic-ncr18650b-made-in-japan.html?gclid=CKr8iaLOq8oCFYOfGwodkdoP4w  seems legit normal price
10:33.27DocScrutinizer05""NKON is settled in the Netherlands.""
10:36.57DocScrutinizer05~2600/2.65
10:36.57infobot981.132075471698
10:37.02DocScrutinizer05http://eu.nkon.nl/rechargeable/18650-size/lg-18650-b4-2600.html
10:37.44DocScrutinizer05~3400/4.25
10:37.44infobot800
10:37.55DocScrutinizer05http://eu.nkon.nl/panasonic-ncr18650b-made-in-japan.html?gclid=CKr8iaLOq8oCFYOfGwodkdoP4w
10:38.55DocScrutinizer05the cheaper ones are only 2.6Ah but more Ah/buck
10:40.59arossdotme-planbor kyak was accidental tab auto complete was meant to be k thanks whitequark :)
10:41.04arossdotme-planbthx DocScrutinizer05
10:41.07DocScrutinizer05yw
10:42.26DocScrutinizer05""Buy 540 times for €3.29 "" ;-)
10:43.17DocScrutinizer05~540*3.4*3.7
10:43.17infobot6793.200000000001
10:43.35DocScrutinizer056.8kWh
10:43.51arossdotme-planb:)
10:43.58DocScrutinizer05~540*3.29
10:43.58infobot1776.6
10:44.02DocScrutinizer05EUR
10:44.09arossdotme-planb:o
10:47.50*** join/#qi-hardware pcercuei (~paul@137.71.226.54)
11:00.48DocScrutinizer05arossdotme-planb: anyway what for do you need those cells? You always need to choose on the tradeoff between high current/power (Ampere, Watt) cell and high capacity/mAh cell
11:01.29DocScrutinizer05those above are high capacity cells with only 2C (max 6A) discharge
11:03.11DocScrutinizer05for RC etc you can get 10C or even 30C cells
11:04.09DocScrutinizer05those have less chemistry for energy storing and more metal in the electrodes for high current
11:04.13arossdotme-planbthe Panasonic ones i was thinking for a light usb power bank to go with my gta04 and my other use was a 14.8v min batt pack for powering  power audio amps class-d 2x45w out (19-24V*3A in) and 150w into 8ohm amps too,   and netbook laptop
11:04.36arossdotme-planb*lighter weight
11:06.13arossdotme-planbhmm
11:06.36arossdotme-planbmy car 14v 4x45w class d amp has a 15amp fuse....
11:06.36DocScrutinizer055S2P, 10 cells, should do
11:07.16DocScrutinizer05~4*45/12
11:07.17infobot15
11:07.52arossdotme-planb:)
11:07.58DocScrutinizer05~5*3.6
11:07.59infobot18
11:08.05DocScrutinizer05~5*4.2
11:08.05infobot21
11:10.05DocScrutinizer05wait, "... other use was a 14.8v min batt pack..."   " (19-24V*3A in)"  ??
11:12.11DocScrutinizer055S2P can deliver 18V * 2C * 2(parallel)
11:12.32DocScrutinizer05~18*7.2*2
11:12.32infobot259.2
11:12.37DocScrutinizer05Watt
11:13.11DocScrutinizer05at that rate, the pack is depleted after nominal 30 minutes, RL 15 minutes
11:16.14DocScrutinizer05never forget about balancing for Series packs!
11:17.32DocScrutinizer05both during charging and for monitoring discharge end voltage
12:25.16*** join/#qi-hardware atommann (~atommann@222.248.65.23)
12:46.07*** join/#qi-hardware sb0 (~lekernel@173-160-41-85-colorado.hfc.comcastbusiness.net)
16:34.44*** join/#qi-hardware sb0 (~lekernel@132.163.132.46)
17:11.47*** join/#qi-hardware kilae (~chatzilla@catv-162-034.tbwil.ch)
18:05.33*** join/#qi-hardware FDCX (357@ceata/consiliu/FDCX)
18:24.56arossdotme-planbDocScrutinizer05, yea, beening wondering about blancing. i have a rc charger to take care of that but i wonder when building diy packs using batts from the same order (say from nkon) will they be the same batch or from differant batches? do i need to monitor indevidual cells or will it be ok to put sets in parallel (and hope for the best)?
18:25.53arossdotme-planbfor discharging i have a rc batt monitor/alarm that shows each cell pack voltage and sounds an alarm when one cell set is out of balance.
18:27.10arossdotme-planbi hope/guess there’s less risk using the Panasonic 3400mah cells as i would need less of them.
18:27.54whitequarkget protected cells, then you don't have to care when discharging
18:28.07whitequarkas the protection circuit will disconnect any cell with undervoltage condition
18:28.10arossdotme-planbnkon looks like the best place to buy from and ship to uk. as uk places ive found so far are over priced considerably
18:29.05arossdotme-planbwhitequark, oh yea, your right. hu i was looking at the protected ones available at nkon
18:29.13arossdotme-planbdouble the price though
18:29.51arossdotme-planbbetter than death :)
18:30.30whitequarkthey're still very cheap
18:31.02arossdotme-planbbattery holders https://www.thingiverse.com/thing:456900/#comments
18:32.28arossdotme-planbthe better diy usb pwr banks have cell monitoring http://www.gearbest.com/chargers/pp_246290.html
18:36.21*** join/#qi-hardware FDCX (357@ceata/consiliu/FDCX)
18:39.25whitequarkha, that holder design is pretty great
18:55.40*** join/#qi-hardware pcercuei (~pcercuei@185.13.202.245)
18:59.32arossdotme-planbyea it is
19:00.14arossdotme-planbant tried it.... but looks good
19:00.37arossdotme-planbmy bad, nkon are 3x the price for protected. china was 2x
19:01.54arossdotme-planbdam
19:02.25arossdotme-planbmaybe i can find a nice protection board for less money that will do the same job
19:07.11arossdotme-planbDocScrutinizer05, 14.8v is the min votage pack im thinking of doing i might add an extra cell set to get 18.4v undecided
19:07.50arossdotme-planb(19-24V*3A in)=power input for my smaller power audio amplifier
19:11.42*** join/#qi-hardware FDCX (357@ceata/consiliu/FDCX)
19:41.39*** join/#qi-hardware sb0 (~lekernel@132.163.132.46)
19:57.50*** join/#qi-hardware arossdotme (~zxy@host-92-26-242-238.as13285.net)
20:03.06*** join/#qi-hardware arossdotme (~zxy@host-92-26-242-238.as13285.net)
20:47.16*** join/#qi-hardware pcercuei (~pcercuei@185.13.202.245)
20:50.18*** join/#qi-hardware arossdotme-planb (~zxy@host-92-26-242-238.as13285.net)
21:07.26*** join/#qi-hardware arossdotme (~zxy@host-92-26-242-238.as13285.net)
21:45.34*** join/#qi-hardware FDCX (357@ceata/consiliu/FDCX)
21:52.34*** join/#qi-hardware FDCX (357@ceata/consiliu/FDCX)
22:04.53*** join/#qi-hardware FDCX (357@ceata/consiliu/FDCX)
22:50.52*** join/#qi-hardware apelete_ (~apelete@rec31-1-78-194-210-47.fbxo.proxad.net)
22:52.43*** join/#qi-hardware arossdotme-planb (~zxy@host-92-26-242-238.as13285.net)
22:58.42*** join/#qi-hardware arossdotme (~zxy@host-92-26-242-238.as13285.net)
23:15.38*** join/#qi-hardware arossdotme-planb (~zxy@host-92-26-242-238.as13285.net)
23:26.30arossdotme-planbjust read up on S and P. yea 5S2P or 4S2P im think. maybe upto 4P :D depending on cost
23:29.30*** join/#qi-hardware FDCX (357@ceata/consiliu/FDCX)
23:33.15arossdotme-planbwondering about rc packs again
23:33.15arossdotme-planbwhile 6c i think will be enough for most things for somethings 12C or more probably would be better
23:34.58arossdotme-planbbwt i found with audio power amps there current consumption depends on what music your playing. most of the time its only using 1,2,3 amps at least with my 2x45w amp. i think its similar for the 4x45w 12v-in one
23:34.59arossdotme-planbso if its really bassy music
23:34.59arossdotme-planbit needs lots of current
23:35.38arossdotme-planbso the actual run times are longer than you might think as most of the time the 4xspk amp is well below 15amps
23:36.15arossdotme-planbping
23:45.51*** join/#qi-hardware arossdotme (~zxy@host-92-24-163-46.ppp.as43234.net)

Generated by irclog2html.pl Modified by Tim Riker to work with infobot.