Search found 140 matches

by rolf_w
May 19 2019 4:06am
Forum: Items for Sale - New
Topic: Advanced ADAPTTO controllers and compatible products
Replies: 1576
Views: 229783

Re: Advanced ADAPTTO controllers and compatible products

I need to upgrade my mini-e firmware to the psw protected version RC-9G_4.3 (or any newer if available). I need its option to lock the controller to ECO mode and to allow unlocking only by psw to re-enter NORMAL and BOOST mode. However, when locked in ECO mode it musn't restrict to use PAS mode, sin...
by rolf_w
Aug 23 2018 4:27pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1135
Views: 99031

Re: bluetooth BMS?

... A coworker of mine is Chinese. I've asked him to hunt around and see if he can find the firmware in the download section a version "V1.A-20180514" of the JBDTools is available. tool.jpg I wonder if this is the latest version? It looks the same as the version V1.8-20170822 displayed here . These...
by rolf_w
Aug 23 2018 12:36am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1135
Views: 99031

Re: bluetooth BMS?

Do you know if this will work on this board? https://endless-sphere.com/forums/viewtopic.php?f=14&t=95962 As far as I know this board is manufactured by Shenzhen Jiayuda/Jiaxa Technology Co., Ltd. ( http://www.jiabaida.com , JBD, e.g. downloads http://www.jiabaida.com/home-1.7-info-id-104-catId-52....
by rolf_w
Aug 20 2018 11:54am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1135
Views: 99031

Re: bluetooth BMS?

Does anyone know what joints to add/remove for the 22s configuration? The TI documentation for the bq769x0 Battery Monitor Family e.g. http://www.ti.com/lit/gpn/bq76920 explains it in tables 8-1 to 8-3. This BMS carries two bq76940 thus allows for 2x15 cells to connect. For a 22s arrangement you ne...
by rolf_w
Aug 15 2018 5:32pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1135
Views: 99031

Re: bluetooth BMS?

charge balancing is only enabled if the charging FETs are turned on, whereas static is always on... The manual which came with the JBDTools 1.1 reads: Balance: turn on balance function. Chg balance: turn on the balance function during charge. If disabel Chg balance, then static balance, eg: the dif...
by rolf_w
Jun 05 2017 3:30pm
Forum: Items for Sale - New
Topic: ELTEK FLATPACK S 48V 1800w -smallest 1,8kw charger on earth-
Replies: 35
Views: 5610

Re: ELTEK FLATPACK S 48V 1800w -smallest 1,8kw charger on ea

Merlin wrote: so if anyone is interessted...
I'm in for one + 2 pcb
by rolf_w
Dec 11 2016 4:06pm
Forum: E-Vehicles General Discussion
Topic: Hybrid trains, cheap partial electrification, momentum~
Replies: 3
Views: 441

Re: Hybrid trains, cheap partial electrification, momentum~

Trains in our steep mountain slopes use the motors as generators to de-accelerate. The generated el. current is fed via the overhead line to the train on the other side of the mountain to do the climb (see). r
by rolf_w
Nov 07 2016 3:44am
Forum: E-Bike Technical
Topic: Adaptto Mini-E/Max-E Owner's Thread
Replies: 5127
Views: 553032

Re: Adaptto Mini-E/Max-E Owner's Thread

...The key switch wires will be available on this controller... an emergency kill switch... I recently received a first generation mini-e from a friend. It doesn't have the on/off wiring and I'd like to know, where I could tweak the system to include such an on/off (kill) switch. I searched for a w...
by rolf_w
May 26 2016 2:12pm
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

...How's your project, were you able to hook it up? thx for the new software - I'll install it asap. I see that you implemented some more item under "Peripherals". I am going to use some of these since I'll let the BMS switch of the charger and probably also the load (=pump) at the inverter's outpu...
by rolf_w
May 26 2016 1:36pm
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

circuit wrote:... We are still working hard on the manual and will let everyone know as soon as it is available
Any chance the manual is out in the coming weeks? r
by rolf_w
Apr 30 2016 11:54am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

Is there a larger problem you are solving? Some very detailed questions here, usually people don't care as much. As explained before I'll use this BMS in a special setup: in a remote solar powered water pump. The existing solar charger has no charging recipe for the existing LiFePO4 16s 100Ah batte...
by rolf_w
Apr 30 2016 8:49am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

We plan to include an option for idle balancing in future, probably will be available after couple releases. Balancing strategy is as you describe and it all goes like this: 1. charger is detected and checks are performed if charging is allowed. 2. If charging is enabled (fet/contactor switched on)...
by rolf_w
Apr 30 2016 3:27am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

thx for the feedback! What is the balancing strategy? I understand that bleeding is enabled when I_bat is 'charging' AND the lowest cell is below the set V_min_cell_bleed AND the voltage difference between the lowest and the highest cell exceeds the set V_max_cell_diff, correct? When does bleeding s...
by rolf_w
Apr 29 2016 4:01pm
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

Finally I connected a 10s battery. I was careful not to have any of the cell wires unconnected, double checked all voltages. I was afraid that the BMS might be damaged if one of the cells would remain open?! I powered up the BMS with the battery pack, watched and logged the measurements with the sof...
by rolf_w
Apr 29 2016 11:01am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

Does it matter in what sequence the cells are connected to the BMS; or, if more than 8 cells, the two connectors: higher or lower voltage cells in the stack first? r
by rolf_w
Apr 29 2016 6:27am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

Over a short lunch break I quickly connected the BMS to my notebook (battery powered) and launched 'Battery Insider'. I powered the BMS with a lab power supply at 8 V: the on board yellow LED briefly blinked, 10 rapid clicks and after a short break another single click were audible. I connected the ...
by rolf_w
Apr 28 2016 9:03am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

To do a first test for a USB / BT communication is it ok to connect a power supply to B+ / B-? what is the V_min ? will the BMS boot without any cell connected? As I understand the chip can not be supplied via USB - thus it's always required to supply via B+ / B- ? or could it be C+ / C- ?
r
by rolf_w
Apr 28 2016 8:22am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 219
Views: 32690

Re: 5-16S Smart Tiny BMS preorder - 30/150/600A rated

I just received the new BMS - looks good! I wanted to connect it up for first tests but I am missing a manual. Is there any documentation available? Otherwise, are there any do's and dont's? for instance: in what sequence the battery / cells have to be connected / disconnected? does communication st...
by rolf_w
Feb 09 2016 6:34am
Forum: Items for Sale - New
Topic: Yet another (?) Smart BMS?
Replies: 118
Views: 15823

Re: Yet another (?) Smart BMS?

A remote installation with a PI zero would work really well... Yes, I am sure it will. However, as I intend to leave the smart phone on site (e.g. to use the touch screen etc.), I'd prefer to not add any redundant hardware - use the smartphone, its battery and charger to do the max. of what is need...
by rolf_w
Feb 08 2016 1:00pm
Forum: Items for Sale - New
Topic: Yet another (?) Smart BMS?
Replies: 118
Views: 15823

Re: Yet another (?) Smart BMS?

BT also is used for pairing with phone... While the most features are operational already, programmable inputs and outputs are being finalized currently. The trick is to present it in comfortable and easy to understand way without overcomplicating things. My installation will be in a remote place t...
by rolf_w
Feb 06 2016 4:38am
Forum: Items for Sale - New
Topic: Yet another (?) Smart BMS?
Replies: 118
Views: 15823

Re: Yet another (?) Smart BMS?

I'm currently sourcing a BMS for a 2nd life LiFePO-battery storage (100Ah, 16s), charged with solar modules to be used in a remote area. I am familiar with smart BMS based on the OZ890 chip (e.g. https://bmsbattery.com/80-smart-BMS ) which are very low cost and might match the specs, unfortunately i...
by rolf_w
May 08 2015 12:21pm
Forum: E-Bike General Discussion
Topic: Speedict Ebike - Anybody seen/tried this?
Replies: 1333
Views: 156808

Re: Speedict Ebike - Anybody seen/tried this?

Can 2x BMS be seriesed, for 20S? it is not with stacking feature, when connect 20s with 2 x neptunes, you only able to live view 10s group at a time. It shouldn't be too difficult to combine the data arriving from 2 Neptune's on the same smart phone display !? I'd love to see such a feature (just s...
by rolf_w
Mar 28 2015 5:06am
Forum: E-Bike Technical
Topic: Adaptto Mini-E/Max-E Owner's Thread
Replies: 5127
Views: 553032

Re: Adaptto Mini-E/Max-E Owner's Thread

[ here cited from jeka] ...BMS has two channels: channel A (channel which is connected to all the expansion cards BMS), and the channel B, outputted to the contact pad. Optional expansion cards can connect to both channel A, and to B, but care must be taken to address boards on one channel are not ...
by rolf_w
Oct 29 2013 11:38am
Forum: Battery Technology
Topic: connections for? EcityP Smart S5-13 BMS
Replies: 187
Views: 49994

Re: connections for? EcityP Smart S5-13 BMS

crossbreak wrote:... mine doesn't if I do not connect any cells voltages to the balancer...
If pin VBAT4 does not have >6.5V the OZ890 will not start! r
startup_sequence.jpg
startup_sequence.jpg (28.16 KiB) Viewed 2632 times
by rolf_w
Sep 06 2013 9:38am
Forum: Battery Technology
Topic: connections for? EcityP Smart S5-13 BMS
Replies: 187
Views: 49994

Re: connections for? EcityP Smart S5-13 BMS

Maybe different chip revisions? I am not aware of any chip revisions made and the valid tech reference still is the "08/03/2009 OZ890 - DataSheet - V1.6": OZ890 has embedded O2micro “Balance on Demand (BOD)” technology which starts up bleeding when the following conditions are all satisfied: Batter...