Flat A123 Cells- When? - RC-Monster Forums

BL_RV0 · **Flat A123 Cells- When? -** 11.11.2008, 12:29 PM

I read somewhere A123 will be developing some flat 123 cells for ease of use. I'm looking for info or the date as to when these will be released. Does anyone know? JW because it sure would be nice to have the reliability of A123 with the compact-ness of lipo. What is the discharge rate and what will be the available MAH ratings? Does anyone have an idea?

suicideneil · 11.11.2008, 01:05 PM

Nope. I would like some though in the future- best people to ask are A123 themselves I reckon, or keep an eye on their website for news.

BL_RV0 · 11.11.2008, 01:10 PM

Ok..

stum · 01:17 PM

New lipo chemistry has come a long way.. 5c charge rates.. puff proof packs etc.. Not to metion lipo is about 1.5x to 2x as energy dense as well. Not much left to like about a123 if you ask me.

BL_RV0 · 11.11.2008, 01:17 PM

Puff proof? Where? Do you mean LiMn?

stum · 01:30 PM

Kongpower have the puff proof and 3c charge & the New Neu's are 5c charge.. but are not advertised as being puff proof.

Quote:

KongPower batteries withstand over-discharging without inflation or damage which is unachievable by any other brand battery. This new and advanced chemical energy technology feature prevents users from damaging their packs carelessly. As an added safety unique to this brand, an internal PCB board has a built in fuse system to prevent shorts and thermal runaway should the anode and cathode become touched together during soldering or handling. This will render the pack unusable, to protect the user from fires due to sustained voltage shortage between the main leads. Customers who inadvertently short the main leads out will be offered a 50% replacement option should they elect to.

These packs come with the same 90 day warranty as the competing packs on the market.

SPECS:11.1V/ 2200mAh/ 25C (3S1P)
Size:110(L)x34(W)x28(H)mm
Weight:195g
25C(55A)Continuous 30C(66A)Sustain 50C(110A)Max Bursts
Stands overdischarging without inflation or damage.
Best performace if voltage is above 6.6V (2.2V/Cell).
Using a Timer is recommended to extend the life of the battery.
Balance Plug: TP style.

Important messages for rc boat and car users!

Model boat and model car are not aircraft which could have immediate danger upon the battery running low. Many model boat players are too excessive on their models to stop until their machines can barely move. This can deeply over-discharge the battery and consequently damage it permanently.

We strongly recommend rc boat and car users to use timers and BECs to prevent their expensive li-po packs from being damaged carelessly. Deeply over-discharging these packs could cause cell(s) to reach 0.0V or even negative voltage. This could short circuit it and cause it to puff.

Suggestion: Install the BEC for li-po batteries and set the cutoff voltage per cell to be 3.0V or above.

IMPORTANT SAFETY INSTRUCTIONS AND WARNINGS
You must read this safety instructions and warnings before using your batteries.
The three months warranty from KongPower Technology automatically becomes invalid, if one violates any of the following:
1. Use Li-Po balance charger or parallel charger only.
2. Maximum charge is 3C but charge with more than 1C could get false message from charger and is not encouraged.
3. Do not overcharge or direct charge, which could shorten the life of the battery and the battery could crack if severely over charged. Cell voltage must not exceed 4.2V per cell.
4. Do not severely over discharge the battery, or it could be damaged. The discharge limit is 2.5V per cell.
5. The cell voltage is best kept above 3.0V. The multifunction chargers might identify the battery as undetectable if the voltage is exceedingly low. Over discharge causes the cells unbalanced or any cell to be over charged. Therefore, over discharge is not encouraged.
6. Constantly over discharge the battery could cause voltage unbalanced as a result of power loss. If a power loss occurs, please charge the battery to 3.8V or above then balance-charge-discharge the battery for 1 to 3 times.
7. Continue to charge a battery that has begun to swell up will cause fire.
8. Never charge your batteries in car under extreme temperature, which could cause fire.
9. Never charge the battery unattended.
10. Do not charge batteries in series. This could cause overcharge, fire, or incorrect battery recognition.
11. Do not expose batteries in direct sun or place it close to any heat source.
12. Check the cell voltage regularly and balance the cells if they are unbalanced.
13. The battery could be hot after use, please leave it for 30 minutes before charge.
14. Please take caution of the above and take a good care of your battery to maintain its high performance and to extend its life.
15. RC model boat and RC model car players please take caution of all the above and also use timer.
16. Warranty:
The warranty does not cover misuse, unpacked battery, abuse, or other inappropriate use of the battery.
Product warranty is limited to original defective.

BL_RV0 · 11.11.2008, 03:53 PM

Does kokam make any bigger puff-proof packs? Like 5s?

Maciolus · 11.11.2008, 04:32 PM

http://gm-volt.com/2007/12/03/a123-u...or-chevy-volt/

BL_RV0 · 11.11.2008, 04:39 PM

Nice find.

marzac2 · 11.11.2008, 05:04 PM

WHY does the battery description say it CAN puff?

At the bottom of the description, it gives warning for car/boat users to be careful not to over discharge the cells or they will puff and be damaged...

stum · 05:18 PM

Quote:

Originally Posted by marzac2

WHY does the battery description say it CAN puff?

At the bottom of the description, it gives warning for car/boat users to be careful not to over discharge the cells or they will puff and be damaged...

They are talking about massive over discharging... below allowed voltage not normal use, don't go to 0.0v and cause a short and you should be fine :) LOL

Quote:

Deeply over-discharging these packs could cause cell(s) to reach 0.0V or even negative voltage. This could short circuit it and cause it to puff.