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04-19-2011 01:33 AM  7 years agoPost 1
Heli_KV

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Ottawa, Canada

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Cannot say I am very happy with Celpro 10S, extremely in it's STORE charge mode. Not speaking that I have second one, because first one went puff and on a second one I had to change fan right out of the box. This charger just does not charge in STORE mode. It stops way before reaching 50% and it requires several iterations to charge to desired value.

Any advise? Any other charger?

I need a powerful one.

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04-19-2011 05:26 AM  7 years agoPost 2
Gregor99

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Western Wa

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I never "charge" packs to storage mode. I store them discharged which is about 3.75 to 3.8v. There is no evidence that storing a pack at exactly 3.85v is required. Only that it should not be stored fully charged or allowed to drop below 3v while in storage.

The thing I don't like about the Cellpro10s wrt to storage mode is that there is no discharge mode. Other than that its still a nice charger. If you want power, there are lots of great options from FMA, iCharger and TP. What size packs are you charging?

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04-19-2011 07:11 AM  7 years agoPost 3
Heli_KV

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Ottawa, Canada

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My most commonly charging packs are 2.2Ah. I usually charge them into storage after flight in order to come from work and quickly charge them to flight. Charging to storage starts to be pretty painful. sometimes it works, sometimes does not.

Before I leaned toward FMA8, but I guess I need to make more research what suits me best.

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04-19-2011 07:41 AM  7 years agoPost 4
Gregor99

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Western Wa

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Have you timed a comparison of charge time between two packs? One charged to storage level and the other discharged. I'm guessing the difference would only be a couple minutes.

If you are looking to charge a bunch of 2200 fast, there are some options. That is, if you are willing to parallel charge. On my Cellpro 10s, I parallel 2x 2200 packs off each port for a total of 4 packs at a time at 2c. This is your cheapest option. Skip the storage mode step and just charge four packs at a time. 4 packs in 23 minutes, not bad.

Today on my Powerlab8 I parallel charged 6x 2200 at 3c. 6 packs ready to go in about 15 minutes. The iCharger 306b is another good charger in this class, but is limited to 30a output (PL8 is 40a). So you can charge 6x 2200 packs at 2.2c.

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04-19-2011 08:08 AM  7 years agoPost 5
Heli_KV

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Ottawa, Canada

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That's minutes, I try to save - coming home after work, not much left to fly. Although, truly speaking, I try to prolong longetivity of packs, because I do not know if I will fly/charge next day. In reality, I charge at 5C (nano-tech), so it is fast and I charge two at a time, while flying, 2 more are ready. Then break for slower charging packs at 2C. And the day is over.

I will need to buy some cables for parallel charging.

I think you are right, though, I need to stop charging to storage mode. I guess I make more damage to packs, just flying them.

Charging in storage mode is a bit tricky, because, if you charge, let's say at 2C and stop at 50%, voltage quickly drops down. That's why there are two charge modes.

In any case, I am looking to add new charger and started questioning if FMA8 is that really a good charger, having some issues with Cellpro. On paper it sounds great and people do not complain much, but who knows is it is suitable for me.

Maybe FMA8 has better or more suitable charge curves for newer packs and they do not care of Cellpro upgrades. In Cellpro, I felt last time as guineepig. because after I reported symptoms, new firmware was issued, addressing my case. It did not help me, just better diagnostics of failure. And for $80 flat rate repair + shipping+ time and crossing border, it was cheaper and easier to buy a new one in which fan did not start appropriately. Just venting.

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04-19-2011 08:24 AM  7 years agoPost 6
Gregor99

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Western Wa

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Let me know if you have any questions about the PL8. I've one since the first batch and have followed it since from the beginning. It still holds the title of the most powerful charger on the market at 1344 watts.

The iChargers also have a very good following and are a little cheaper. The 306b (6s) and 3010b (10s) are both powerful chargers, just not as powerful as the PL8. Thunder Power recently released their dual port 800 watt (400+400) charger that is being well recieved.
Maybe FMA8 has better or more suitable charge curves for newer packs and they do not care of Cellpro upgrades.
I'm not sure what you meant by that. The Cellpro 10s works fine with newer packs. Are you using one of the auto modes 1c, 2c or 3c? If so, I'd recommend against it. I'll give you more details if you interested.

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10-20-2011 10:02 PM  6 years agoPost 7
norsman

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paradise PA

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I've always used Thunder Power 610's and loved them.I just bought a cellpro 10 s and like it so far,it does every thing I need but I never use the storage cycle.I fly year round so I always leave my packs fully charged never no when the moment is going to hit ya

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