JUNSI ICHARGER 208B DRIVER
The B manual states that it balances cells to within 10mV, but offers no other indication of how accurate it should be. There is table of error messages in the back of the user manual, but as often the case the error displayed on the screen and its description in the manual might mean little to the end user. When you turn on the charger you are usually in a selection in one of the right four columns of the map shown below. My iCharger B was one of the earliest released so it has firmware version 3. Measuring power and charge with the Fluke V is not a direct process and requires the product of two measurements, voltage and current for power, and current and time for charge.
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I have seen a laptop get fried by current through the ground wire of a USB cable so this is not an unnecessary precaution. For this review I will be using version 3. Canceling a charge If at any time you wish to cancel the charge simply press the “Stop” button.
However, the B does not require the use of the balance tap and can charge the full 20A in unbalanced mode which is no better than the chargers of old.
Another reason they caught my eye was their thread on RCGroups where they listen to customer feedback and use the feedback to fix bugs and add features.
You’ll want to become familiar with the differences between the various LiPo charge modes as there are no less than 8 variations. Pb battery cell count: The second example assumes the last battery charged is identical and all of the parameters are correct so nothing needs changed. With the exception of the low indication of power and temperature these results are very good.
There is table of error messages in the back of the user manual, but as often the case the error displayed on the screen and its description in the manual might mean little to the end user. As shown in the picture to the right, the following come in the box: This is the drawback of having a generic plotting utility that does not know how the data is associated with each other.
The B is advertised to balance cells to within 10mV.
Even if you only save every 10th or 20th plot this gives you the ability to record that data while in the field. The jubsi of the B circuit board. Note that the regenerative discharge feature is shown in this newer version of the manual even though it isn’t available in my older firmware.
iCharger B W 20 amp Charger From Junsi – Nexus Modelling Supplies
Do not use a standard USB cable with the B. NiCd and NiMH packs of up to 25 cells and lead-acid of up to 18 cells can be charged in unbalanced mode.
If you don’t care to plot your data then ihcarger may very well not use any software unless you decided to update the firmware to get a new feature or bug fix such as the new regenerative discharge feature. This has not been without its drawbacks though as opinions vary on how the charger should behave so sometimes you get someone requesting a modification and someone else asking for it to not be changed.
This can be very useful if you are trying to “zoom” in on an area of the graph. The PC interface is simply a USB cable which at first glance appears to be a great idea as we ichargsr have tons of them around and won’t need to store yet another specialized cable, but it turns out that this is a somewhat special USB cable so you still need to keep track of it and only use it on the iCharger.
Other features The B has built in 16Mbit flash memory that can be used to record charging data while away from a PC at the field then downloaded later when at home. Even if your power supply would normally require you to limit the B input current or set an input watt limit we can safely ignore that for now simply by choosing a very 208v charge current that won’t stress the power source.
In the case that the message doesn’t help you find the cause of the problem it is useful for asking others what could cause that message to pop up or in determining if repairs need to be made.
iCharger 208B 350W 20 amp Charger From Junsi
Pages of the manual pages of the old version describe the basics in how to connect the B to LogView so I won’t repeat them here. If the balance tap is required to be connected then the balancer is active while in the other modes the balancer is not active and connecting the balance tap simply allows you to monitor cell voltages.
Not only does it look extremely cluttered, it is nearly impossible to use like this so you’ll want to uncheck the boxes at the left to remove plots that you are not currently interested in viewing. Overall it works fairly well though and Junsi always has the final say on everything, as you would expect.
The front of the B circuit board. The first example assumes that the last battery charged was not a LiPo and none of the charge parameters are correct and they will all need changed. These suggestions and bug reports have been accepted with amazing open mindedness by the manufacturer, including adding the foam cutting feature as suggested by one of the forum members.
Graphing The Logview software enables plotting various information depending on the charge type. Between the output banana jacks and the balance port connector is a 3 pin connector for junssi temperature probe.
T he output power can be adjusted to align with the available input power, thus prevent ting input current overload and protecting the DC source. Turnigybut be prepared for some very unusual choices of words. One complaint I have is that if you have button beeps turned off you won’t get a beep jusi the cancel so you junwi to go off of the data displayed on the screen to verify that the charger halted the charge.