Paraboard anyone?

[kenghock]

Hi Folks
Anyone tried using this yet. Its for parallel charging up to 6S and 6 x lipos concurrently.
Just wanted some feedback before ordering.
Thanks
Ken

[kenghock]

Apologies, I forgot to provide a link.

http://epbuddy.com/index.php?main_page=index&cPath=15

[aeronautical]

hi im using this same thing bought from h-k website. it's slightly cheaper there as compared to the website you provided. search for "Parallel charging Board for 6 packs 2~6S (T Connector) CB6-6S''

basically it can charge up to six batteries WITH the same capacity and voltage at the same time. however, the balance cable that you see that comes out of the paraboard is for 6cell lipos. my charger cant support that many so i had to manually connect the first three wires to the '3 cell' port of my charge. show you some pictures later.


it's good overall. usually i would charge my batteries at 1 amp. so now i can charge 4 batteries at 4 amps and get them all charged within the same amount of time.

[aeronautical]

there you can see that i attached a standard 3 cell lipo balance tab to the 6 cell tab so that i can fit it into the charger

[aeronautical]

*sorry i ment first 4 wires

[kenghock]

Hey thanks for the info. Sounds like a real time saver. Did you have to get a separate power supply for the charger?

[Creative]

The thing abt // charging is that you can only charge lipo that have small V difference.
// charging large V diff would have adverse effect on lipo and also safety issue.

i prefer series charging, but have to diy charging harness.

[jaZallo]

paraboard

been there done that. highly recommended.

look here : http://www.daddyhobby.com/forum/showthread.php?t=67375

enjoy.

[aeronautical]

yes im using a wall power supply to power up the charger

Hey thanks for the info. Sounds like a real time saver. Did you have to get a separate power supply for the charger?

[kenghock]

The thing abt // charging is that you can only charge lipo that have small V difference.
// charging large V diff would have adverse effect on lipo and also safety issue.

i prefer series charging, but have to diy charging harness.

Hi Creative
Could you advise why series using charging? Is that more flexible?
Thanks
Ken

[Creative]

How parallel balance each cell is thru voltage difference btw the cells.

So lets say after a whole day of flying, your lipos definitely would definitely end up w/ different voltages. Unless you every flight fly until cutoff lor.

The moment you plug your lipo in the parallel harness, the cells of each lipo will immediately balance out the respectively cells of the other lipo due to voltage difference.

Depending how how large the difference is, this may cause a surge of current to the cell w/ lower volt. As you may know, charging lipo with current that exceed its rated charge rate is a no no.

Series charging wont have the above issue. Con is that most charger only charge up to 6s, sum of your cells of your lipos charging can only max up to 6.
Unless you using super high end, some can do 14s, ie can do max 3 of 4s lipos.

[aeronautical]

yes thats true. i usually fly with moderate throttle for 7 mins per flight on my watch. what i notice from plugging in the separate lipos into the // board is that they will balance out to the average voltage. eg my 4 lipo batts after flying are: 11.7, 11.7, 11.8,11.8 V. After a short time, they will all become 11.75 after plugging it in.

How parallel balance each cell is thru voltage difference btw the cells.

So lets say after a whole day of flying, your lipos definitely would definitely end up w/ different voltages. Unless you every flight fly until cutoff lor.

The moment you plug your lipo in the parallel harness, the cells of each lipo will immediately balance out the respectively cells of the other lipo due to voltage difference.

Depending how how large the difference is, this may cause a surge of current to the cell w/ lower volt. As you may know, charging lipo with current that exceed its rated charge rate is a no no.

Series charging wont have the above issue. Con is that most charger only charge up to 6s, sum of your cells of your lipos charging can only max up to 6.
Unless you using super high end, some can do 14s, ie can do max 3 of 4s lipos.

[misato]

The thing abt // charging is that you can only charge lipo that have small V difference.
// charging large V diff would have adverse effect on lipo and also safety issue.

i prefer series charging, but have to diy charging harness.

I am using this board and I strongly suggest everyone remember this fact as I accidentally killed one of my battery when charging 6 x 3S with 8A current (5 of the battery was lightly used, except one which was quite drained). Luckily it didn't end up a fireball as i realized the damages done within a minute as the cell bloated to a crazy size, 1 cell was killed during the fateful charge.

The board just merely let electronics principle does it jobs and has no protection of sort. When you parallel a few battery together, during charging, the battery with lowest voltage potential will get the most of the ampere as the same battery will also have the lowest resistant. Usually, if the batteries are all depleted to nearly the same manners, the charging current would be more or less be split between all the batteries. If not the current would fall squarely between the batteries with voltage that is lesser than the average of all the connected battery.

[kenghock]

Thanks for this. Good safety tip.

Creative
Could I trouble you for more info on series charging please. Where to get or how to make the harness and balance cable.

Thanks
Ken

[Creative]

Thanks for this. Good safety tip.

Creative
Could I trouble you for more info on series charging please. Where to get or how to make the harness and balance cable.

Thanks
Ken

http://scriptasylum.com/rc_speed/lipo.html

The 2nd row.