Preamble Following on from the blog, the section on the B6 charges became so long, that I have moved it into its own blog. B6 based chargers A very popular type of charger is the SkyRC iMax B6 (50W), or the B6AC, which has a built in AC adapter.

There is a version two of the B6AC, which has PC connectivity, but still charges at a maximum of 50W. There is a B6 Mini (60W) as well, which does not have an AC equivalent, but is superior to the original B6 (PC connectivity) and both the version 1 and 2 of the B6AC (increased power – 60W rather than 50W). The Turnigy Accucel-6 is basically the same as the B6 version 2, but comes in two versions, 50W and 80W. The first version, which has been replaced by and. There is a great teardown video by EEVblog.

There are also the following charger that follow the same design • Bantam e-Station BC6, to manual (PDF: ) and; • Century (UK) X6 iMax B6 The cheapest charger is the, £8.92. Note that it comes with no power supply (either interla AC, or external).

AC/DC Dual Power Professional Balance Charger/Discharger. Input Professional Balance Charger. Optimized Operating Software IMAX B6AC V2 features the so. Small Business Server 2011 Standard Download Iso. July 3, 2017. Intel Graphic Accelerator Driver For Windows 7 Ultimate 32 Bit. July 3, 2017. Dhinka Chika Remix Hd Video Free Download. July 3, 2017. Clannad Episodes English Dub Download. July 3, 2017. Eplan P8 Software Download. July 3, 2017.

There is the iMax B6AC, which comes with an internal mains power supply. Note that these are not originals, and are fake clones, which are prone to overcharging (see below).

The cheapest power supply unit (PSU) for the charger, on eBay, is, £5.70 + £0.99, although this may be a little under powered (60W), and thus get rather hot, and so a 70-100+W PSU, for example 15V @ 10A, would be better, see. However, the cheapest solution is to use a PC power supply (see below). For a breakdown of what is inside the iMax B6, watch the video (which dissects a Turnigy Accucell 6 charger). There is a risk of overcharging, watch. To remedy this, see (two solutions: replace the potentiometers (?) and/or multiplexer, or; reflash the controller (if there is no known hardware fault)).

Also, try to watch, as this is very informative, and shows the differences of the fake with the original, in particular the lack of a fuse on the charging output, as well as how to calibrate the box, by pressing the decrement and enter buttons while switching on the unit. Another video. IMax Charger Another in depth review is the. This thread also the Century UK X6 charger, which appears to be a rebadged model. The Bantam e-Station BC6 is a similar charger, to manual (PDF: ) Schematics The schematics are linked to in this thread, [].

Here are the schematics: • []; • [] See RC-Power_BC6_Charger and Charger Also available here,, linked from: • • Firmware. From, on github, this code is still maintained. Fixing a clone If you have a clone, then you may find this article useful,. The only thing that might make it better is an exposed ISP port, a serial link and open source firmware. All of which in theory is hackable. Other Uses Foam cutter – 3.5A required, and 5A can be supplied.

(constant voltage, current. Resistance) Power Supplies (for the iMax B6) 12V @ • 5A, 5.93 • 6A, 7.13 • 8A, 8.79 • 10A, £10.70 This is £9.99 for 12V 10A. The DC connector must be 5.5mm x 2.5mm (outer diameter x inner diameter), for the iMax B6. Now you may ask yourself, “Is a voltage higher than 12 V required, to charge batteries greater than 3S (11.1 V)?” Well the answer is no, because the board has a DC-DC voltage boost converter, or step up converter, circuit (Buck Boost), which will provide a voltage greater than the 12 V supplied. Using a PC PSU You could use a PC power supply, as most of these are rated at 250 W or more. The main points are: • To power the PSU on, you may need to short the power-on line, pin 4 (often a green wire, but could be grey) of the 20 pin motherboard connector, to ground (pin 3). You could do this with a paperclip, or a piece of mains copper wire.

• The yellow wires are the 12 V lines. • Parallel up the yellow wires, to supply sufficient current. Xbox 360 Iso Extractor Linux. The power supply that I used was able to supply 14 A on one line, but it may not be necessary, but drawing over 8 A on a single narrow gauge wire is not particularly advisable.

For more details, see. Also watch the video below. DIY: Using a PC power supply with your lipo charger. Getting an original If, after watching all of the videos above, and reading all of the horror stories, you are paranoid about causing a fire, or just want to treat your LiPo batteries with respect – thereby extending their lifespan – then it is probably best to get an original item.

If you consider only the B6 mini, or the B6AC version 2, which are the latest and greatest offerings, then the cheapest genuine original items (search for “SkyRC” not “B6”, “B6AC”, “LiPro” nor “Imax”) are: •, £25.00 + £7.50 •, £20.00 + Free Postage (the next cheapest is ) •, £20 Issues with Fakes The B6 is one of the most copied chargers. As to whether you should risk it and buy one, see: See also. A note on Batteries with Internal Charge Protection From I have just compared the standard B6 and the Mini B6 manuals and they BOTH say same that you should not charge or discharge batterys with Integral Charge circuits or Protection.

Just checked Accucel 6 manual – that is same Issues with the Turnigy Accucel chargers Phone Apps with the Turnigy As the SkyRC and Turnigy models are practically the ame, then can the WiFi module be used, as well as the SkyRC iPone/Android apps (Turnigy do not offer any iPhone apps). From HobbyKing’s product page for, I have updated the firmware from 1.12 to 1.13 and now I can use the SKYRC app V3.3 to monitor the charging process with the Skyrc Wifi module pluged to the USB port. Version 3.4 dont work ( curve and balance fonction dont work ): search with google the V3.3 app for download ( I use Android 4.4) and select the international product for this charger and in the files tab you can download the firmware 1.13. Have a nice day Also, from HobbyKing’s product page for, FYI for those of you who like gadgets, this charger can be controlled and monitored with a smart phone via WiFi with SkyRc Wi-Fi module SK-600075 and SkyRc ChargerLink APP.

The WiFi module has decent range, I can connect with the charger in the garage or the patio from in the house some 30 feet away. The Android APP does crash when trying to access GRAPHIC or BALANCE view but will pick up where it left off when restarted, all other functions seem to work fine. And Update, the Hitec Connect APP works better, will not crash in Graphic or Balance views. Looks like maybe and older version V1.1 as ChargerLink is v3.4 Be careful of which firmware updates you update your charger with else you may reduce the power output of your Turnigy charger.

The SkyRC firmware is not necessarily compatible with the Turnigy hardware. Also mentioned in I was silly and without thinking updated the FW on my ACcucel 6 80W charger with SkyRC FW vers 1.13. I thought the FW would be ‘universal’ being that the Chargers are SkyRC based (most likely of their production line as well). Now my Display lights up with words: SkyRC B6 Mini Settings on max power only allows me 60W now. I no longer have 80W capability. How to flash the Acucell charger (mentioned in but from (see below)) 4. Flashing the Charger I have attached a ZIP archive containing the modified firmware (fw_1.13_patched.bin), the original firmware (fw_1.1_original.bin) and the flashing tools: fw_1.13_patched.

To flash the firmware, start DFU.exe and select fw_1.13_patched.bin. Then, enter VID = 0x0000 and PID=0x0001, and press update. The charger will enter DFU mode and Windows should install the DFU driver, which takes a few instants (it’s a HID device, so drivers are already included with Windows). The updater will then flash the firmware (do not shut down/disconnect anything!), and the charger will then reboot. The charger is now able to charge Lithium batteries without connecting the balance leads. DISCLAIMER: I cannot provide any guarantee that this code will not brick your charger, burn down you house or worse. Proceed at you own risk, and never leave charging batteries unattended.

TL;DR: grabbed the firmware update, spent some quality time with a disassembler, patched two bytes, flashed new firmware. Charger now accepts to charge Lithium batteries without connecting the balance leads.

Firmware not supported The cheali firmware is not supported as an older style controller is used, from Online searches indicate the Accucel 80w is using an old chip not suitable for Cheali etc. So I’m surprised the SkyRC flashed and works! Lack of calibration Turnigy Accucel 6 80 W can not be calibrated, You could calibrate the original 50watt 5amp model. It worked on mine.

When they came out with the 6amp model that ability was lost. And Holding the buttons at power on still puts it into firmware update mode instead of calibration mode. From Do you own one of the Turnigy Accucell 6 80W chargers? Does yours have the calibration option? If yes, what version of firmware does your one have? Just bought two of them and mine don’t have it, they have FW v 1.2 Holding buttons 2 & 4 at power on does nothing, although holding buttons 1 & 3 makes it go into some sort of updating mode. Anyone got calibration on theirs?

Can not turn off balance mode From the same thread as above,, it comes to light that there is a lack of the ability to turn off balance mode If I want to balance charge I select “LiPo Balance Charge” where it demands the balance connector. For a standard charge I select “LiPo Charge” and it does not demand the balance connector. I never upgraded the firmware on mine so it’s still on the version it shipped with.

And I just tried my Accucel 80W on Vers 1.13 A single 1S cell charges fine on CHARGE mode without any balance lead needed But a multi cell will not. 2S and more requires balance lead even when CHARGE mode selected. This is the old problem that the Mini B6 had when it first came out then the updated FW had the option to switch off the BALANCE LEAD requirement.

The Accucel 80W update has basically removed that switch. However, there is an unofficial solution I’ve also got one of these chargers and I am mostly happy with it, but I have also been annoyed by the inability to charge Lithium batteries without the balance connector. But instead of waiting for the manufacturer to provide a firmware update, I had a try at patching the firmware myself and had pretty good success at it. Here are some details on how I did it: 1. Feasibility of the hack. I first began with downloading the 1.13 update (), which I opened in a hex editor. The firmware image appears as is inside the.exe file, and I could figure out the various strings that show up on the LCD (like “BATT/PROGRAM”, “BATT METER”, “LiPo”, etc.).

So there was a good chance of being able to disassemble the firmware and try to patch the balance connection check. Now the Accucell 6 80W is not based on an Atmega328 or Nuvoton chip like most B6-based chargers, so it is not supported by the existing custom firmwares. However [aequitas], opened his charger and the main chip is a MA84G564AD4, which is an 8051-based MCU by Megawin technologies. While there is no English datasheet for this particular chip, I have been able to find a development kit for a similar chip (MG84FG516) on their website:.

This devkit contains some example code, the English datasheet and more interestingly, a USB firmware update tool, which allows us to flash any firmware to the charger (it does not perform version or checksum checks). I then grabbed the MCS51 instruction set and went to the disassembly. Firmware Analysis Since there are no symbols in the firmware file, a top-down approach (starting with the reset vector @0x0000) is not really feasible. Instead, I went with a bottom-up approach. The first lead I had was the clear-text strings near the beginning of the firmware. However, since this is an 8-bit chip, and the addresses are 16-bits, the addresses do not appear as a whole in the code.

I then looked for code interacting with the I/O ports, since these strings are written to the LCD. I have then been able to identify the functions responsible with interacting to the LCD, more specifically: setting the cursor position, writing a single character, writing a string.

Looking for the references to the latter function, I have been able to find where the strings are used in the code, and work up the menu functions: the main menu where we can select the battery type, go to the system settings, etc. And the program menus, such as the “Lithium” menu, where we can select the charge or discharge mode and set the current and number of cells. Now, get ready for some technical details Let’s call the variable containing the number of cells N_CELL and the charge mode CHG_MODE. The values assigned to CHG_MODE are: 0 for CHARGE, 1 for DISCHARGE, 3 for STORAGE, 4 for BALANCE CHG and 5 for FAST CHARGE. Another function I have found using this approach is responsible for writing error messages to the LCD. The actual strings are not directly referred to by this code, instead their addresses are stored in a table in RAM, which is loaded from ROM addresses at some time in the boot process.

In this table, we can find a reference to the BALANCE CONNECT ERROR message. Working from here, I have found the function where this error code is set.

Directly above, the N_CELLS and CHG_MODE are checked to see whether there is a balance connect error. More specifically, the code @0x5F4F does the following: Check if N_CELLS == 1. If yes, do not show the error (it’s what allows us to charge 1S batteries without the balance leads) If no, check if CHARGE_MODE == 1 (DISCHARGE).

If yes, do not show the error (which allows us to discharge batteries without the balance leads). Otherwise, show the BALANCE CONNECT ERROR and terminate the current program. Black Body Radiation Experiment Pdf Editor.

Patching the Firmware The charge mode check is implemented in assembly as. Code: offset hex disassembly comment ------------------------------------------------------------------------------------ 0x5F59: E0 movxa,@dptr; A = CHG_MODE 0x5F5A: 64 01 xrla,#001H; A = A ^ 1 0x5F5C: 60 03 jzL5F61; if A == 0 then jump to 0x5F61 (no error) 0x5F5E: 02 5F E1 ljmpL5FE1; otherwise show BALANCE CONNECT ERROR Now we want the error to trigger only when the mode is set to BALANCE CHG, and not in the other cases. To do this, we should jump to 0x5F61 if CHG_MODE is not equal to 4 (BALANCE CHG). This is implemented as. Code: offset hex disassembly comment ------------------------------------------------------------------------------------ 0x5F5A: 64 04 xrla,#004H; A = A ^ 4 0x5F5C: 70 03 jnzL5F61; if A!= 0 then jump to 0x5F61 (no error) The patch then simply consists consists in changing 01 60 by 04 70 at addresses 0x5F5B:5F5C. If you are interested in more details about the disassembly, e.g.

For custom firmware development, just drop me a line. Flashing the Charger I have attached a ZIP archive containing the modified firmware (fw_1.13_patched.bin), the original firmware (fw_1.1_original.bin) and the flashing tools:. To flash the firmware, start DFU.exe and select fw_1.13_patched.bin. Then, enter VID = 0x0000 and PID=0x0001, and press update.

The charger will enter DFU mode and Windows should install the DFU driver, which takes a few instants (it’s a HID device, so drivers are already included with Windows). The updater will then flash the firmware (do not shut down/disconnect anything!), and the charger will then reboot. The charger is now able to charge Lithium batteries without connecting the balance leads. DISCLAIMER: I cannot provide any guarantee that this code will not brick your charger, burn down you house or worse.

Proceed at you own risk, and never leave charging batteries unattended. TL;DR: grabbed the firmware update, spent some quality time with a disassembler, patched two bytes, flashed new firmware. Charger now accepts to charge Lithium batteries without connecting the balance leads. Summary of Turnigy Accucel issues All of the issues mentioned above, with the Turnigy Accucel chargers, are neatly rounded up in this thread I recently bought a Turnigy Accucell-6 50W 6A Balancer/Charger LiHV from hobbyking (recently means order placed Dec/2015) since i could’t find the older version and knowing that it could potential be a redesign (for good or bad). Translated that it does the job, with some minor? Searching around didn’t reveal all the info i needed at the time of orderingSo here is my story: Calibration Calibration menu is missing from this device.

And the device is a bit off: 13.86V measured at my power supply using my fluke (although not calibrated in the last 3 years) 13.88 with Watt meter in series (0.08A is not causing significant voltage drop). Device during discharge reports IN Power voltage: 13.81v That’s 50mV off if we trust my measurement. Q: How this will affect charging? What is the maximum voltage i should measure in a lion battery during CV phase charging? It’s 4.2 +_%?V Is it ok if it goes above 4.25V?

(insert reducing cells life) I though i would be lucky because alternative firmware exists for the older chargers. Wrong Different hardware Device look like that it is build around 8051 (and not AVR) as the older one. At least this is what is reporting on the serial connection C8051F3xx USB Input device VID_0000*PID_001 same story like the 80W version.

Cheali-charger firmware doesn’t support it (yet) Disable balance check during Lion charge (enabled for Balance charging) Security first if i want to charge a 2S/3S pack is should use a balance charger. But if i want to charge the pack without balancing this family of chargers had an option to disable the check if you are on the mode charge (and not balance charge). This option is missing, balance socket should be used in all modes in this charger. Termination voltage Since i don’t want to risk it i decided to change the termination voltage to 4.18V using the battery memory set Wrong it resets back to 4.2 after a power cycle, i think they did it as a precaution again. Turnigy Accucel 6 80W – HobbyKing 7A Power Supply.