Has anybody experience with this? I just got one.
Here is a short first report:
I use the Cell log8s as a comparison. The new thing is a BM16LP. The instructions are here: http://www.chargery.com/doc/Chargery%20 ... 20V3.0.pdf
Not too bad for a Chinese product and it appeared to operate and function per the instructions so I won't repeat. It is also available in a BM16LF version for LiFePO4 cells. I have not tested it to the limits on either charge or discharge so I do not know first hand how the alarm works.
All I did was to connect to a 12S LiNCM module (EnerDel) and compare to the CellLog8s and Fluke multimeter measurements. I'll compile those measurements in a spreadsheet and post later. Both the CellLoggers and BM16 had cell voltage deviations of 10, maybe 15 milliVolts from the Fluke readings. The CellLog has a set-up calibration which I never bothered doing; the BM16 has no calibration.
As you can see, the BM16 is a simple circuit board and small screen which is shrink wrapped (in clear as it comes out of the box). The first screen is a multicolor fuel gauge (SOC), not available with CellLog8s. The BM16 comes with 2 temperature sensors, and a plug for the alarm output. Temps appeared to read correctly.
On the 12S EnerDel module I split the monitor leads into 2 separate JST 7 pole plugs. I use one each for 6 channels of the 8 available on the CellLog8s. Using these for the BM16LP, the first 6 cells display as cells 1 thru 6 and the second 6 cells as cells 9 thru 14. Works for me that way and no sparks
I like the plastic case on the CellLog over the shrinkwrap BM16. The CellLog has a data recording capability which I really like and use whereas the BM16 does not.
Nice about the BM16LP is:
You can turn it off with a button push as opposed to unplugging it. I have yet to verify it has no parasitic drain.
Easy to read SOC gauge.
Less costly. (Maybe 20% less delivered than two CellLog8s. I hate to post actual prices on products from others)
I kinda like the little thing and will put it to use and maybe get a couple more. My eTractor would take 2 of these instead of 4 CellLoggers and look a little cleaner on the dashboard and easier to read.