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Search took 0.00 seconds. Search: Posts Made By: electric1
Forum: Lithium Power Systems 28-07-2011, 10:04
Replies: 98
Views: 30,683
Posted By electric1
Re: LiFePo4 House Bank Using SmartHousePower BMS

Heat related concerns only apply to high C rate applications. House bank is a very low C rate application, so there are no heat concerns from the batteries. However, if ambient temps in the battery...
Forum: Lithium Power Systems 28-07-2011, 09:49
Replies: 98
Views: 30,683
Posted By electric1
Re: LiFePo4 House Bank Using SmartHousePower BMS

I apologize to you and others who have tried to contact me in this thread and got no response. I abandoned this forum since the discussions were no longer constructive. Same trend is on other forums,...
Forum: Lithium Power Systems 28-07-2011, 09:33
Replies: 98
Views: 30,683
Posted By electric1
Re: LiFePo4 House Bank Using SmartHousePower BMS

Found it

https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090023862_2009023573.pdf

I would say that any statement that any Li chemistry, including LiFePO4 is "poorly understood" is...
Forum: Lithium Power Systems 28-07-2011, 09:20
Replies: 98
Views: 30,683
Posted By electric1
Re: LiFePo4 House Bank Using SmartHousePower BMS

For naysayers, while its not possible to convince you of anything since your mind is already made up, I attach NASA paper of using Li batteries in space application, which is probably most demanding...
Forum: Lithium Power Systems 28-07-2011, 09:04
Replies: 98
Views: 30,683
Posted By electric1
Re: LiFePo4 House Bank Using SmartHousePower BMS

What makes discussions about Li batteries confusing is that people refer to voltages without relating to state of the battery at the time voltage is measured. Such states are - charging ( at what C...
Forum: Lithium Power Systems 11-06-2010, 10:41
Replies: 98
Views: 30,683
Posted By electric1
You bring lots of valid points. Many of the same...

You bring lots of valid points. Many of the same discussions have been going on on EV forums for past 2 years, since LFP cells became widely available.

Yes, it is very much possible to run LFP...
Forum: Lithium Power Systems 11-06-2010, 10:24
Replies: 98
Views: 30,683
Posted By electric1
Wow, I take few days to focus on my work and the...

Wow, I take few days to focus on my work and the thread adds another page :)

Thanks everyone for great discussion, excellent points made by both nay-sayers and yey-sayers :popcorn:

And, as...
Forum: Lithium Power Systems 04-06-2010, 19:46
Replies: 98
Views: 30,683
Posted By electric1
While I am finishing up BMS-in-a-box solution,...

While I am finishing up BMS-in-a-box solution, which will be completed in a few days, I have posted LFP-in-a-box unit for sale in Classifieds section.
...
Forum: Lithium Power Systems 20-05-2010, 16:56
Replies: 98
Views: 30,683
Posted By electric1
I can see how my statement might have been...

I can see how my statement might have been interpreted as inaccurate, but that is not how it was meant. I meant it the same way you did.

However, maturity of any product or technology is in the...
Forum: Lithium Power Systems 20-05-2010, 16:18
Replies: 98
Views: 30,683
Posted By electric1
Actually the battery is full at 14.0V . Anything...

Actually the battery is full at 14.0V . Anything above 14V is just a surface charge and BMS uses it to balance the cells. You can charge to 15.2V without damaging the battery, but there is simply no...
Forum: Lithium Power Systems 20-05-2010, 16:04
Replies: 98
Views: 30,683
Posted By electric1
The file still opens up fine for me, not sure...

The file still opens up fine for me, not sure what the deal is.

I absolutely agree that today LiFePO4 is a niche product, but sticker price alone can't be used to judge it. When all benefits are...
Forum: Lithium Power Systems 16-05-2010, 06:19
Replies: 98
Views: 30,683
Posted By electric1
So, to make you happy, every time I speak about...

So, to make you happy, every time I speak about LFP cells I have to distinguish high power cells from low power cells? Well, let me make it easy right now, I never did and I never will use high power...
Forum: Lithium Power Systems 15-05-2010, 08:00
Replies: 98
Views: 30,683
Posted By electric1
Steve, this system would retail about...

Steve,

this system would retail about $2500.

Any battery monitor which counts AmpHours in and out will work perfectly with LFP banks. Many DIY EVs use Xantrex battery display and other...
Forum: Lithium Power Systems 15-05-2010, 07:45
Replies: 98
Views: 30,683
Posted By electric1
LiFeTech, this statement doesn't make any sense...

LiFeTech, this statement doesn't make any sense and with all due respect you are putting down your competition in every post you make with very little facts, mostly just empty phrases of how superior...
Forum: Lithium Power Systems 13-05-2010, 15:56
Replies: 98
Views: 30,683
Posted By electric1
Sorry for slow progress, there aren't enough...

Sorry for slow progress, there aren't enough hours in a day to get all the work done :)

The drop-in unit is now completed and ready to be put on a boat!

Here is what it looks like. Standard...
Forum: Lithium Power Systems 06-05-2010, 09:09
Replies: 98
Views: 30,683
Posted By electric1
There are different patterns to distinguish...

There are different patterns to distinguish different conditions. Audible signals start with short and less annoying beeps, then grow into longer and more annoying beeps as battery gets lower and...
Forum: Lithium Power Systems 06-05-2010, 07:34
Replies: 98
Views: 30,683
Posted By electric1
To make a prototype of a complete drop-in...

To make a prototype of a complete drop-in solution I purchased 4 200AH cells from LFP manufacturer called HiPower. These cells fit perfectly into standard 4D marine battery box made by Todd, with...
Forum: Lithium Power Systems 06-05-2010, 07:19
Replies: 98
Views: 30,683
Posted By electric1
Here is the white paper draft for my new BMS. ...

Here is the white paper draft for my new BMS.

15921
Forum: Lithium Power Systems 06-05-2010, 07:15
Replies: 98
Views: 30,683
Posted By electric1
LiFePo4 House Bank Using SmartHousePower BMS

As I promised in the other LiFePo4 discussion thread, I am starting a new thread to focus specifically on details of my new BMS designed for LFP house banks. Going forward I will use common...
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