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RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

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RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Old 08-14-2007, 07:04 PM
  #51  
cmavr8
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.


ORIGINAL: jvictorfc

I couldn't find the IC's they sell then just in large quantity (5000). =( Does anyone know anything else about it?
Can't you get a sample for free?
Old 08-15-2007, 06:37 AM
  #52  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

I found this information just on the internet, I've looked everywhere in my city around but without success. Have you found in somewhere there in Greece?
Old 08-15-2007, 07:04 AM
  #53  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Haven't looked, but I think the large microchip companies like microchip and maxim give out samples for free. Actually I had a chip delivered to me for free in the past...

EDIT: here: http://sample.microchip.com/Default....stCookies=true
Old 08-16-2007, 06:33 PM
  #54  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.


ORIGINAL: lk808

I received one of the blue "V2" units off eBay yesterday and it didn't include a temp sensor. I've also seen mention and pictures of the temp sensor, however there is no connector for it on the charger as there is on the Bantam charger. The 601BC's firmware lets you turn on/off the temperature cutoff and setpoint, but the external temp always reads 0C during operation. The manual mentions 801BC in at least one place, so I suspect that the 80W rating of the 801BC also got mixed in by accident.

Here's what I've noticed of my 601BC so far:

- When using the coax power input, the black input clip is automatically disconnected, however the red clip is live so be careful not to let it touch the metal case of anything that is grounded. The coax input is center positive. If I decide to keep this unit and void the warranty, I will probably desolder the wires from the unit and put a coax plug on the desoldered ends.

- The Inc button didn't work very well and requires a harder push or multiple pushes. I turned on the button confirmation beep to help. I can't tell if it's poor quality switches, poor button debouncing, the loose nut behind the button ;-), or a combination of these.

- There's a red LED inside the case and somewhere near the Start button. It blinks from time to time but it is somewhat difficult to see. The buttons are blue and somewhat translucent, so the red light isn't conveyed very well.

- The right side panel wasn't assembled correctly. The red banana jack was soldered at a slight angle and the assembler couldn't get it to go on flush, so s/he tightened the screws anyhow. There was a slight gap allowing the backlight to shine through which was annoying. I loosened the screws and realigned the panel.

- The CD contains Silabs CP210x v4.2 drivers and the monitoring software (interestingly, in a folder called "e-station"). I tried to download and install the WHQL-certified v5 drivers from silabs.com but the Silabs installer was unable to install on my system, so I used the CD drivers. It works on XP Pro. I can view various graphs as well as the charger settings.

I've been cycling various 7- and 8-cell Sub-C NiMH and NiCd packs, mostly new. I haven't tried charging lithium batteries yet. Here's what I've noticed:

- During charging and discharging, the charger starts at a high rate (but not necessarily the rate that I select) and gradually tapers down as it nears the end point. I've selected 2A discharge and the highest rate I've seen on the display is 1.3A discharge. The packs were partially charged, so I suspect that it starts at the rate specified for a particular state of charge.

- The case gets pretty hot during discharge. It has stayed cool during charges up to 3A. Although there is a finned heatsink on top of the case, it is interesting that the FETs contact the bottom panel and the power resistors don't contact the case and rely on the wimpy fan for air cooling.

- During charging, the current and fan will stop and start repeatedly. I haven't noticed a definite pattern, but during the first charge I thought I had a defective unit. I assume that it is trying to determine how full the battery is.

During the last 4 charge cycles, the charger reported Connection Break just as it neared the end of charge. This happened on 3 different packs and always towards the end. I'm using the alligator clips on wire leads to a Tamiya connector. I just reclipped the leads and I'm testing again to see if it was a bad connection.

These chargers seem to be a bit of a lottery.
Some seem to work ok, others are totally unreliable. The units are probably blown together in china for under $10 and the quality control is just not there.
It's a shame really as this charger is very well specified and would be a market leader if a few issues were addessed.
There are no other chargers on the market that have all these functions as well as balancing in one small field unit.

My mkII is still working at the moment with only a few occasional glitches however I always get the feeling I can't trust it. I certainly wouldn't go out and leave it unattended.
I can do this with my Pro peak constellation charger as it has never incorrectly charged a pack in over 300 cycles.

Balancing a 3 cell LiPo on my BC601 slightly overcharges the pack at 12.66V on average. (4.22v per cell) This equates to about 0.5% overcharge which is still within the normal 1% tolerance.

There is no temp sensor on this model.
The fan will switch off approx every 2mins as the charger stops to measure battery voltage drop during charge.
The led on the circuit board will also flash if you connect a battery to the output of the charger without a power feed connected. It appears to monitor some sort of process during the beginning of the charge cycle and switches off a few mins afterwards. This was not present on the mkI models.

Old 08-16-2007, 10:28 PM
  #55  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

If I had found this thread sooner I wouldn't have purchased this charger. I would have gone for one of the mid range BANTAM e-stations they have all if not more of the functions that the 601BC has. I think they use the same charging processor.
Old 08-17-2007, 06:03 AM
  #56  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

This charger is really a copy of the Bantams with the e station 6 being close to the amount of functions offered on the 601. As you rightly said I also believe they share the same charging processor. The bantam probably uses higher quality additional components and has better QC.
Old 08-17-2007, 11:29 AM
  #57  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Friend, If is possible could you see if they send for free those IC's which we have talked about. Please just if is possible. I couldn't understand the website. Thx a lot.
Old 08-18-2007, 09:30 AM
  #58  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.


ORIGINAL: Jeff_Green

I would definitely say they are mosfet's on the board all the gates drains and sources are connected but the part number is AP 4407. any 4407 mosfet should work. Having the same case will make it easer but it is not a must just get the g d s right. good luck.
Jeff (or anyone) could you give us more info on the 4407 chip?
We're searching for a sample but I don't know in which category to search...

Thanks!
Old 08-18-2007, 09:44 AM
  #59  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

here is a 4407 that has the same foot print as the one in the charger. this chip is a pnp power mosfet here is a data sheet for it. [link=http://pdf1.alldatasheet.com/datasheet-pdf/view/146973/A-POWER/AP4407M.html]link[/link]
Old 08-19-2007, 12:26 AM
  #60  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Hi, I just recieved mine. It's the black version, I don't know why, but when i ordered it on ebay was a classic blue version. Tested charging a Pb 12V 7,5 A battery, it was ok, just stopped at the 5A limit. Charged a LiPo 800ma 2 cells, and the final charging was 3,80 for each element. Tried with NiMh, 1A max current, and what I don't understand is why it do this: begin to charge at 1A, then go down to 0A for 1 or 2 sec, then the current rise again for 2 minutes to 1A, then go down do 0A.. and so on.It's not random, the time elapsed from 1A to 0A is always the same.I would like to know if all those chargers do the same or mine have some problems? Is something to change in the setup? Thanks
Old 08-19-2007, 10:54 AM
  #61  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

My charger will do the same thing I think it is checking the voltage of the battery. l have had problems with it detecting the peak charge point of NiMh batteries. Make shore you have your safety settings set correctly.
Old 08-20-2007, 07:48 AM
  #62  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Hi,

Mine works with lipos ok but doesen't stop on delta peak on NiMh or NiCD batteries . This is the second one. The first one got on fire (lots of smoke) after the third charge.

Any sugestion for the delta peak problem ?
Old 08-20-2007, 10:39 AM
  #63  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Have you tried changing in the setup the NiCd and NiMh sensitivity? I use 10mV for NiCd and 7mV for NiMh, it works ok. Does your the same stop and start of the fan (for just about 2 sec.) during the NiMh or NiCd charging process?
Old 08-20-2007, 08:11 PM
  #64  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

hi guys!

Im really having hard time to decide what charger to buy, i was planning to buy the x-power 601 untill fortunately i learned a lot from you guys about the charger. is it now practical to buy if its the new version now? i found it on RC-ypin on ebay. Im trying not to waste my money for a crappy charger coz of my budget issues, i just really need something to use ( or will the bantam would do better? ) where can i buy it if ever? thanks a lot in advance!!!!
Old 08-20-2007, 08:28 PM
  #65  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

The Bantam BC-6 would be a good choice
[link=http://www.rcaccessory.com/index.asp?PageAction=VIEWCATS&Category=11]Charger[/link]
Old 08-20-2007, 08:45 PM
  #66  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Thanks a lot jeff! but do you think its really aint worth buying the new 601BC? bantam is a bit more pricy but i can wait for a while to have budget for that if thats the best choice! It doesn't need an ac-dc power converter i think
Old 08-20-2007, 09:07 PM
  #67  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

The 601BC would be a great charger if it had a few bugs worked out of it and used better components. The BC6 would be your best bet if you don't need the the lipo balancer the DuraTrax IntelliPeak ICE Charger would be my choice. good luck with what ever charger you go with.
Old 08-20-2007, 09:32 PM
  #68  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Ok thanks a lot! I need the balancer and i thought the bc6 new version is already a balance charger.

http://www.neumotors.com/20061222/Chargers.html

The BC6 dual power charger is one of the best charger values around today. It can handle not only the NiCad/MH batteries but it supports 3 different types of lithium batteries. It even can charge your field charging lead acid battery when at home! The BC6 includes a built in balancer for up to 6S lithium. With the push of a button you can charge and balance your packs without external boxes and extra wires! It has a easy to learn user menu and bright 2 line LCD display with back light. $129 including ground shipping in USA.

Bantam BC6 Dual Power Charger/Balancer
Operating voltage: DC 11-18 volts/ AC Power : 100-240V, 50/60hz
NiCd/NiMH 1-15 cells
Lithium 1-6 cells
Lead acid 2-20 volts
Charge current 0.1-5.0 A
Discharge current 0.1-1.0 A
# of cycles 1-5
Weight 960 grams
Old 08-21-2007, 12:23 AM
  #69  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

The 4407 is a logic-level, P-channel MOSFET. You should be able to substitute with another that has similar or better specs, same form factor, and same pinout. For example, the Fairchild FDS6681Z has almost twice the current-handling capability with the same power dissipation as the 4407. It also features ESD protection which might be nice to have for a universal charger.

To those that experienced smoke coming out and burned FETs: did you verify that the battery was connected correctly to the charger? The burned FET sounds like a reverse-polarity short through the avalanche diode. The charging voltages and current put out by the 601BC seem within the 4407's capabilities, but I suspect that the charger has no protection for mismatched wiring through these connectors. Looking at the side panel with the output connectors on my unit, the common negative pin of each connector is the leftmost pin.

I removed the bundle of wire and alligator clips from my charger. The wires on my unit were simply tacked onto the top side of the board with a blob of solder instead of passing through the holes on the circuit board. Simply unscrew the side panel with the DC input and USB jacks to get to the wire ends. I don't use the clips so I think it makes the unit easier to pack. And it eliminates the danger of shorting the positive clip to ground.

That's as far as I dare disassemble it for now. The front and rear sides need to be pried apart to remove the top panel and I didn't want to damage the case.
Old 08-21-2007, 12:39 AM
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

albx: Thanks for posting your delta peak detection settings. I'm also getting inconsistent delta peak cutoff like Zodrak noted. It seemed to work fine when the cells were new but worsens as the packs are used. I'll try your settings.

My unit's fan also stops and starts for about 2 secs during NiXX charging. The firmware might be doing this intentionally to reduce electrical noise as the microprocessor measures peak voltage.
Old 08-21-2007, 09:17 AM
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

To take your charger apart first remove both side plates, grab one of the buttons on top with a pair of pliers and pull it out it won't be hard do this for all 4 buttons, slide the top plate to the left to unplug the fan, now you can slide the top out to the right.
Old 08-21-2007, 02:08 PM
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Thanks for the info on the 4407, but I still can't find it in the sample page.
Could someone locate it using this page?: http://sample.microchip.com/Default....stCookies=true

Pardon me but I am an El. engineer student in my first year. I just learned about semi-conductors and transistors!
Old 08-21-2007, 05:05 PM
  #73  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Thanks Jeff. I didn't realize that the buttons were simply pressed on. I used a knife edge on the side of the button and soft cloth to minimize damage. They came off very easily. Then disconnected the fan and the front panel slides off to the right.

These units appear to be entirely hand soldered. Many of the solder joints look questionable. They did not clean the board of flux afterwards. Lots of fingerprints on the board. Ugh.

The charger uses an Atmel mega32 and mega8 processor. The mega32 seems to be controlling the display and button input, and the mega8 seems to be doing the balancing. There appears to be two programming headers on the main board. I'm desoldering the LCD so I can get a better look and to see if they're locked.

Does anyone know whether Bantam has ever released firmware upgrades? Can their firmware can be flashed through the USB port on their chargers? I'm hoping that the firmware is a copy of Bantam's and there's a bootloader in the 601BC.
Old 08-21-2007, 05:32 PM
  #74  
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

Bantam only does the charger updates at the factory for this very specific reason. To prevent the Chinese copies to get a copy of the actual software that Bantam developed.

They can make it look and act like the Bantam units, but not work like them.

RC Accessory, Inc.
Auth US Bantam Importer
Old 08-21-2007, 10:37 PM
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Default RE: RC-POWER 601BC BALANCE CHARGER/DISCHARGER.

I have been looking for a newer firmware and have had no luck. The orbit chargers seem similar and there is a firmware available for download but I don't want to try it without having the original.

Has anyone had any luck finding a more stable program than the one that comes with the charger "e-station". It crashes on me all the time.

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