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  1. ruriimasu

    What type of batteries can be left in car under direct sunlight?

    Thanks. I've been hearing of lithium battery powered devices catching fire while charging. So am quite surprised when you recommended lithium cells. The power station I am interested in will have at least 20 pieces of 18650s. Will this be a problem? My biggest concern is fire. I don't think car...
  2. ruriimasu

    Anybody leave li ions in car during summer?

    Hey guys! Sorry for digging up this super old thread! Was there ever a conclusion/confirmation whether batteries can be kept inside a hot car? I actually started another thread here and then found this thread. I'm in a situation where I want to permanently leave a portable power (similar to...
  3. ruriimasu

    What type of batteries can be left in car under direct sunlight?

    Hi folks! With all your knowlege on emergency backups, circuits and batteries, I hope to find an answer here. I've been trying to have some sort of portable power supply (similar to photo insert) permanently stored in my car for powering equipment such as AC fan, etc... for spontaneous acts...
  4. ruriimasu

    Explain to me electronic switch and parasitic drains

    Hi Chris, I'm actually asking in preparation of buying a new single AA light. The reason I'm asking is because much of these newer designs are side switches (I hate them btw, easy to accidentally turn on and need to 'feel' in the dark). I narrowed down to Klarus Mi7 but read that it drains...
  5. ruriimasu

    Explain to me electronic switch and parasitic drains

    How do I tell if a flashlight i see online have regular switch? Basically I don't like battery power to be consumed when I'm not using it.
  6. ruriimasu

    Explain to me electronic switch and parasitic drains

    How do i tell electronic switch from normal? For eg, i have a nitecore d10, which drains my batt dry in weeks. My other eagletac d25a doesn't seem to drain my battery as it remains quite bright even after months, seems to be same for manker e11. I'm thinking of getting a klarus mi7 but read it...
  7. ruriimasu

    What battery charger will you carry on Apocalypse?

    sorry.. my bad :oops: i checked out batteries/electronics and didnt see any such funny threads and thought it would suit better here. once again, my apologies.. :o
  8. ruriimasu

    What battery charger will you carry on Apocalypse?

    i saw another thread on the lights to carry and was more interested in the battery charger you will carry to keep the batteries loaded. knowing full well that electricity will no be available or very limited, i can think of only dynamo cranked type and solar charging type. what will u guys use?
  9. ruriimasu

    Information on GP Recyko fast charger & AA betteries...primarely best maintenance!

    Re: Information on GP Recyko fast charger & AA betteries...primarely best maintenance i used recykos for my camera too. and my camera didnt like them much. should have linked the 2 together when my camera couldnt work when i loaded new GP alkies sometime back. hope they work for you. i cant...
  10. ruriimasu

    How do you measure how much power a battery still has?

    alright thanks guys. i think i will just charge up the batts every 2 months :D:crackup:
  11. ruriimasu

    How do you measure how much power a battery still has?

    so the best bet is still a cheap battery tester with weak fair strong indicators?
  12. ruriimasu

    How do you measure how much power a battery still has?

    There are those cheap battery testers that have indicators such as weak fair strong but they dont really tell much, eg my batt is 2100mAh how do i know whether they is still 1700 or 600mAh left in it?
  13. ruriimasu

    heat tolerance for li-ion

    thanks to mr happy and luxluthor :) ......... but the only NiCad AA i see on DX is only 1000mAh, im sure it wont power my D10 for long :mecry:
  14. ruriimasu

    heat tolerance for li-ion

    i didnt start this thread. i hijacked it! :nana: okok.. i think i will get a set of NiCad batts instead since i have not idea where to buy these vapex batts and there are not available in my country. i think this is a little too late, but the DIY solar charger is not intended for everyday use...
  15. ruriimasu

    heat tolerance for li-ion

    hi all, i just remembered for the GP Recyko NiMH batts which i intended to use, they also have a solar charger for them? so i was wondering does that mean i can use the solar charger i made for these batts too? i saw the physical charger in my local hardware store and other than battery holder...
  16. ruriimasu

    heat tolerance for li-ion

    So bottom line is no no to solar charging LSD NiMH? :( If anyone is interested, this is my setup. i got it from instructables and modified a little bit. solar panel +ive is connected to a diode. the +ive and -ive wirings are connected to an on/off switch. a battery holder for a pair of AAs is...
  17. ruriimasu

    heat tolerance for li-ion

    hi tom. how about when it gets hot after charging off AC? i used a sanyo 2hr charger and it got really very very hot after the charges. will that damage the LSD properties?
  18. ruriimasu

    heat tolerance for li-ion

    can i then use the charger to charge two AA Recykos? the solar panel is 5V 130ma. i read from the website that the current is usually higher than whats claimed and the solar panel actually works better in a cooler temperature. can i use a 5V panel to charge up two AA Recykos (2.4V combined)...
  19. ruriimasu

    heat tolerance for li-ion

    mr happy, thanks for the information. i've ordered a few parts off DX and kaidomain and am waiting for all the parts to arrive before i DIY my on solar charger. initially i wanted to use it to recharge NiMH AAs, specifically Recyko AAs. now after hearing what you said, i was thinking maybe to...
  20. ruriimasu

    heat tolerance for li-ion

    so is trickle charging them with solar for 3 days considered as 3 cycles? im still confused. and also, if i place them in a normal charger for 10mins and decide to switch off the charger and switch it on after a few mins or hours, is that considered 2 cycles?

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