MySensors battey board revision 1.0
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the logic is that none rechargeable battery can lasts for 1-2 years
rechargeable battery can lasts for 1-2 years tooAfter the 1-2 years the none rechargeable battery is empty and should be brought to the recycling point but my own experience is that rechargeable batteries are not gone in two years.
See Nickel–metal hydride battery#Telecommunications, it looks to me NiMH batteries can be designed for 10 year operation. Also normal available batteries claim they retain 65-70% capacity after five years in storage and like written earlier, I think we can do with 10% of the original capacity.
No problem for me if this has to wait, I can always add something myself, and yes, let logging prove what's right. Only thing I find a pity is that it will take two but probably much more year to prove things ;-)
@daulagari said:
After the 1-2 years the none rechargeable battery is empty and should be brought to the recycling point but my own experience is that rechargeable batteries are not gone in two years.
I've read that NiCD can sometimes do better for solar landscape lights than NiMH, because the type of cycle favors it, but often they say to plan to replace the batteries every couple of years anyway - between the charge cycling and the outdoor temperature cycling (cold and hot).
Perhaps this is different, being very shallow discharge compared to lighting. Really only testing will let us know for sure, and I'd be glad to see the results of that.
And yes, it's hard to wait a year or two for results. (It's hard to get most homebrewers to let their products age, too). But the time to start the test is now, and results will start trickling in. It used to be kind of fun when JeeLabs would post something like "Well, unit #1 is at 420 days and unit #2 is at 287 days, and here are the results so far". Sort of like slow gardening.
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Interesting!
I believe your choices are great between size and functionality for a non specific use case. -
Also interested.
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Can't give any ETA yet. We'll start with production of 500 pcs of the step-up module (to test production site). Vacations has delayed things a bit.
@hek Hi there . I am still interested . Can i pre book some pieces?
I think the 500 lot will vanish :-)
Consider approx 10 boards per interested person... -
any news
