Also included is a schematic of the BMS circuit. The video above gives a look inside an ebike battery and describes the basic procedure used to troubleshoot a battery that is cutting out or failing to charge. It also balances the cells during charging (ensures each cell receives the same charge) and disconnects the battery from it's load if short-circuit or over-current conditions are detected. This board monitors the cell voltages inside the battery and ensures that no individual cell voltage charges to above 3.65V or discharges below 2.0V where they would be damaged. In addition to the cells there will also be a BMS (Battery Management System) board inside the battery. So if our example cells were 2000mAh, then out 16S4P pack would have a capacity of 8000mAh. Battery pack amperage is the sum of the individual cell amperage times the number of cells in parallel. So our 16S example battery would have a voltage of about 53.5VDC charged. Battery pack voltage is the sum of single cell battery voltage (about 3.33V-3.35V charged) times the number of cells in series. So a 16S4P battery will have 64 cells total (16x4).
Batteries packs are described by the number of cells they have in series (S) and in parallel (P). Modern eBike batteries use Lithium Iron Phosphate chemistry with multiple cells arranged together in a grid to provide the correct voltage, current and capacity. They don't leak off their charge or go dead over time. LiFePO4 cells also hold their charge indefinitely. LiFePO4 batteries are far less prone to the fire/shorting issues that Lithium Ion batteries are now famous for.
I tried to answer every possible question, but naturally I missed some.Lithium Iron Phosphate (AKA - LiFePO4) is increasingly being used for electric vehicles (and as a replacement for Lead-Acid batteries in general) due to it's long lifespan ( >1000 charge cycles), light weight, flat discharge curve and awesome chemical stability. Information about computer and calculator half of which is probably not important but I don't want to waste people's time asking and answering:Īny help would be appreciated.
It is not visible in any other connection software I have tried. The connection is probably solid because it's charging. Works now' or just no answers and thread death. It always ends in 'Oh, yeah, I found in device manager and updated that. I have never found an online thread where the computer doesn't recognise the device whatsoever.
There are no drivers to update in device manager because there is no visible device. I uninstalled and reinstalled TI-connect with no effect. Intel(R) 7 Series/C216 Chipset Family USB Enhanced Host Controller - 1E26 Intel(R) 7 Series/C216 Chipset Family USB Enhanced Host Controller - 1E2D It is connected by USB (naturally, because the I/O port is gone now), and the sum total of my USB entries in device manager is: I went into device manager and found nothing related to TI. I then searched for the calculator in TI-Connect and the search failed. I updated TI-Connect, took the cable from the box and plugged it into the computer, and plugged it into the calculator. Yesterday, I bought a TI-84+CE and immediately tried connecting it to my computer. I tried months ago to connect my TI-84+CSE to my computer, and months before that to connect my TI-84+SE to my computer, giving up each of those times.
I'm sorry about making an addition to the thousands of 'my calc doesn't connect to my computer halp' threads on the internet, but TI's customer service is markedly bad, and no solutions are generally given in those threads, as they all end up being 'oops, I fixed it', 'oh, I needed to install TI-Connect', or just 'So what have you tried so far?' with no answer and thread death.