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  1. ktm_paul

    is the icharger 1010b+ isolated?

    rhitee05/gary - is this isolated? Diagram from the 'engineer' at icharger...
  2. ktm_paul

    is the icharger 1010b+ isolated?

    Got an answer from the manufacturer: "Our engineer has do this experiment according to your description, and it works. The P350 power supplies are isolated, but since there is a 0.01μ static bleed capacitance to ground wire, and we are not sure if there is some risk. In this way, we still...
  3. ktm_paul

    is the icharger 1010b+ isolated?

    I think as a backup ill just use a contactor to seperate the packs... iv got an extra ev200 and i think i can find space for it on my motorcycle conversion. then i guess it is safe to connect each 1010b+ to its own P350 and then to the mains... i do hope the P350 power supplies are isolated...
  4. ktm_paul

    is the icharger 1010b+ isolated?

    That is _extremely_ helpful - thanks. That clarifies a lot of ideas for me. :D Unfortunately I have already ordered the power supplies - and the supply is in the mail - so I will both ask the company now and test once they arrive. :roll:
  5. ktm_paul

    is the icharger 1010b+ isolated?

    It turns out I plan on using two P350 power supplies from Jun Si (http://www.hillrc.com/UploadFiles/P350.pdf) How can I know if they are isolated? Wouldnt they have to be for AC/DC power supply?
  6. ktm_paul

    is the icharger 1010b+ isolated?

    But isnt there a problem with a potential short if the inputs/outputs of each charger are not isolated? Will the 1010b+ balance properly on a floating voltage (effectively 37V to 74V)? Sorry - if this is a stupid question. paul.
  7. ktm_paul

    is the icharger 1010b+ isolated?

    discharge to 20% then charge to 100%: (40aH x 74V * 0.8 )/ ( 2 * 300) = 4 hours. Not great to live with but OK for experimentation.
  8. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    thanks - do you have a picture example of finished product? oh - and is there a good way to get the plastic shields off?
  9. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    Just got 8 5aH 5S packs of 20C Turnigy LIPOs from HC (10day delivery by airmail to UK). That makes 12 now - ill rig up a 74V x 15aH pack with them and go for a quick test ride! Funny thing was - the connectors are now male/female (previous 4 packs were female/female) - bar one which is...
  10. ktm_paul

    is the icharger 1010b+ isolated?

    For those who are interested - the 1010b+ is NOT isolated but is 'safe' to use for monitoring without isolation according to jun si. so i guess its a contactor to separate the packs for charging...
  11. ktm_paul

    is the icharger 1010b+ isolated?

    are there any other icharger 1010b+ users? wisdom and thoughts appreciated!
  12. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    So would it hurt to connect your cut wire to the first wire on the left pack via a strip board? I.e. i was going to connect 5s packs via 6pin JST connectors on strip board by overlapping one pin ... am I asking for trouble? Doesnt this achieve the same thing? thanks.
  13. ktm_paul

    is the icharger 1010b+ isolated?

    As part of a motorcycle project im looking at using Turnigy 5S 5aH Lipo packs. I was going to put 4 packs in series then parallel those chains to make 50aH. Effectively 20S 10P. Iv got 4 packs now for trials. My plan was to charge/monitor (initially) using two icharger 1010b+ units. If...
  14. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    in this option i would recommend a hat that says "press here for 4.3V charge". :mrgreen:
  15. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    lol... was thinking checked luggage...
  16. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    If anyone is up for a trip to Hong Kong from UK - I will pay 250 GBP of the 400 GBP flight in return for collecting some LiPos. Sounds crazy - but if a few people in same city/area are up for it it is cheaper to fly there and collect in person. Just pay a bit of excess baggage. (if 2-3...
  17. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    i just noticed a new listing - 'bulk buy'! Live for physics - can you ask them to do something similar for 5ah, 5S 20C cells? http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=8930&Product_Name=Turnigy_BULK_BUY_2200mAh_3S_20C_($14.99ea_/_36pc_box)
  18. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    10S 10Ah - I would be interested in 8 to 12 of those packs. When do you expect a response from HC?
  19. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    Im no electronics guru but I found some small size strip board and i bought their extension leads (20cm). I will cut the extension leads and solder to the strip board (in my case - 8 females since I will be 8P). I will then solder one male by the leads too. Will only need 4 of these to make it...
  20. ktm_paul

    Zippy Flightmax / Turnigy lipo testing

    I would be interested in some 10S 20AH packs or similar. Just got my 'sample' LiPos from HC - four Turnigy 5s 5aH 20C packs - checked - and all at 3.85 and 3.86V on arrival! Please let me know ASAP if you will get them to make larger packs - I want to get my project moving along. If not - im...
  21. ktm_paul

    LiPo battery care and basic information

    where did you find 10aH lipos? I thought you were using 5Ah lipos - sorry. What connector will you use for parallel? or just fashion your own? Tips appreciated. thanks.
  22. ktm_paul

    LiPo battery care and basic information

    thanks matt. how will you connect them in parallel? PS isnt that 1.1 kwh though? 12 * 3.7 v * 5 * 5 Ah
  23. ktm_paul

    LiPo battery care and basic information

    Is there any harm in connecting these in parallel (say 6 of them): http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=9174&Product_Name=Turnigy_5000mAh_5S_20C_Lipo_Pack Then using this to charge and balance them...
  24. ktm_paul

    LiPo battery care and basic information

    Has anyone bought these or similar? How many cycles are they good for? Are they suitable for emotorcycle too? I understand charge/discharge concerns...
  25. ktm_paul

    Lithium Ion Super polymer

    any luck?
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