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  1. MrAl

    Are your old Eneloops still going strong? - a survey.

    Hi, Very interesting. I knew they were lower capacity of course but didnt think about the other aspects yet. I am now wondering how well they would work in a sort of high drain application like one of my newest flashlights that uses four AAA cells. I would really like to use rechargeable...
  2. MrAl

    Are your old Eneloops still going strong? - a survey.

    Hi, Yes i was going to say that but forgot :-) Thanks for the update. I guess i have enough Eneloop cells now that i dont have to worry about a few being discarded. It wasnt always like that, but i bought a couple packs of them so i have enough for my basic needs now. I use them every day in...
  3. MrAl

    Are your old Eneloops still going strong? - a survey.

    Hi, Yes i think the CC17 would work, but i was using the CC55 which charges with higher current. Maybe i threw them out too soon, but i think they were also showing signs of faster than normal discharge. As you probably know, high internal R also means faster discharge because the internal R...
  4. MrAl

    Are your old Eneloops still going strong? - a survey.

    Hello there, Circuit City closed up around 2009 and before that i remember seeing some of the first Eneloops being sold in one of their stores but they were 20 dollars (USD) for just four cells so i thought that was overpriced and did not buy them. Shortly after that though i did buy some at...
  5. MrAl

    Advanced Battery Charger With Analyzer?

    Hello again, Well i dont think people want to get into measuring their own internal resistance unless they already have an instrument that does that. But i was also thinking SOC, and the only way i think we can see equal SOC's is if they are both run down all the way. Then there is the...
  6. MrAl

    Advanced Battery Charger With Analyzer?

    Hi, Nice to hear you have found one you like. I hope it fits your needs.
  7. MrAl

    Advanced Battery Charger With Analyzer?

    Hello, And i guess you have a good way to determine that? There are so many other points that need to be addressed here though that even if they are the same it doesnt matter. For a quick example, the two voltages. For another quick example, the two SOC's. To make sure the current is the same...
  8. MrAl

    Advanced Battery Charger With Analyzer?

    Hi again, I just want to reiterate the idea that you can easily build your own charger from a wall wart, resistor, and battery holder. 100ma is easy to achieve and you can even go lower like 50ma if you really feel the need to do that. The resistor and wall wart is sized to fit the number of...
  9. MrAl

    Advanced Battery Charger With Analyzer?

    Hello again, Well yes it is actually easy to understand that the current does not go lower than 200ma and that is because the power 0.2*1.6 is only 0.36 watts and since the temperature rise is dependent on both the power and the surface area, that 0.36 watts easily dissipates into the...
  10. MrAl

    Advanced Battery Charger With Analyzer?

    Hi, The Opus BTC3400 charges at different charge rates, and will lower the charge automatically if the cell internal resistance is too high for a normal charge. I think the min set point is 200ma but it will go down lower i think if the cell cant take it.
  11. MrAl

    Why Use Unprotected While Protected Works Fine?

    Hi, Well if it works "FINE" then it seems to me it would be your own choice or based on happenstance. For example, if you did not have any protected cells left and you wanted to change your battery, you'd have to use one of your unprotected cells. For a risk example, it would depend on if you...
  12. MrAl

    Why Use Unprotected While Protected Works Fine?

    Hello there, I dont know if this has been said or not yet but, some things will simply NOT run on protected cells because the protection circuit does not go up high enough to allow the proper current to flow. I dont think there are any protection circuits that go up to 30 amps for example, but...
  13. MrAl

    Anyone done Self Discharge tests on Eneloop Pros?

    Hi, Just a quick note about the self discharge tests. This test has to be done under controlled temperature conditions. The higher the temperature the more self discharge. Over a somewhat longer period of time this makes a difference. If someone tests theirs at a temperature of 70F and...
  14. MrAl

    I was told to NOT use Eneloops..

    Hi, Ok thanks for clearing that up. So they are not the normal 14500 cells they are a very specialized cell. That is good of Fenix to come out with such a product, but i would not have called them a "14500" cell i would just call them by their own part number. "14500" is misleading and i see...
  15. MrAl

    Anyone done Self Discharge tests on Eneloop Pros?

    Hi, Sometimes we just like to know that we are getting what we think we are getting. The higher capacity cells are more expensive than the regular cells, so i would want to see a higher reading on self discharge. If not, it would not make any sense to pay the extra money. So it's a money game...
  16. MrAl

    Any ideas about the most efficient way to charge 18v tool batteries from solar?

    Hello there, He does not NEED an inverter? Only if the charger has a 12vdc input right? I was under the impression that the charger only had a 120vac input and so would only run on 120vac. If it has a 12v input then there are more possibilities. If the charger has a 12vdc input then the...
  17. MrAl

    I was told to NOT use Eneloops..

    Hello there, Sorry, i dont understand what you are saying. That is because the Li-ion 14500 cells are more like 3.7v nominal and get charged to 4.2v when recharged. I have 14500 Li-ion cells and they are all more than twice 1.5v being around 3.0 to 4.2v during use. Perhaps you know of one...
  18. MrAl

    I was told to NOT use Eneloops..

    Hello, Beware the company that says, "The other product is no good, buy from us instead". They all say that :-) I would use it with Eneloops, then check it every three months for any signs of damage inside. After a year or two i would write back to the company and tell them they were wrong...
  19. MrAl

    AmazonBasics AA Rechargeable Batteries Yea or Nay?

    Hi, Nice of you to look that up. So i guess we want the black or gray ones then. What you might also check is the price comparison to the Eneloops of the same rating.
  20. MrAl

    Any ideas about the most efficient way to charge 18v tool batteries from solar?

    Hello there, From the other posts i take it that the tool uses Li-ion batteries where some are in series and possibly some in parallel. If they are Li-ion, then the only way to do it is to either get an approved 12v charger (as i think others said) or else use a 12v to 120vac inverter for the...

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