AA Cell choices for Mag 2D ROP?

[MikeSalt]

Hello again,

I have a Mag 2D ROP running on 6x Nosram AA cells in a FiveMega 6AA>2D holder. I have been very impressed with this setup so far, especially the ability to charge the batteries in the holder.

Amongst my future purchases is a better fast charger. The current one that I use is the charger to my radio controlled car, which is good, but rather cheap. The delta-peak cut-off sometimes triggers falsely, and I have to restart the charging if it does.

I have an extra FM 6AA>2D holder on the way so I can either swap my parts from my ROP 6D into a 2D host, or keep it as a spare. My question is this:

Which AA cells will give me ~70% maximum output for the longest time?

The contenders:

Sanyo Eneloops 2000
GP 2700
Sanyo 2700 (if I can find them in the UK)

This flashlight is used (and charged) weekly at the VERY least, often daily. I have considered eneloops for their high-load discharge characteristics, not the Low Self Discharge. LSD is not important to me. Unfortunately, eneloops are restricted to a 2A charging current, so I would not be able to use the 4A setting on my new charger.

I have also heard that the lower capacities tend to be more durable. Please folks, any advice will be very much appreciated.

Thanks

 

[Pokerstud]

I would go with the Sanyo 2700mAH batteries, hands down.

http://www.thomasdistributing.com/sanyo-2700-aa-rechargeable-batteries.htm

 

[MikeSalt]

Sanyo 2700s would probably be hands-down if I could find a UK supplier, or at least a reputable overseas supplier with international shipping facilities.

 

[MikeSalt]

I have problems trusting Hong-Kong dealers that charge more for postage than the product itself. Even more laughable is that they give you a 30-day product return policy, but it takes 28 days to get to you.

 

[MikeSalt]

Oh well, found a Hong-Kong supplier that only wants £15.50 for 8 Sanyo 2700 cells, delivered. Even if the deal went sour, it is only ~$31. Will top up the paypal funds now in advance.

 

[MikeSalt]

Paypal funds nearly cleared now. Any last suggestions?

 

[FatTony]

The Sanyo 2700's don't fit in the FiveMega adaptor (at least not the 2 that I have). I use Titanium PowerMax Hi Discharge 1800's in my ROP Hi, and Eneloops in my Mag85. I have tried the Eneloops in the ROP Hi and I think the beam stays whiter for longer with the Titanium cells but both run for about 20 minutes until quickly dropping to nothing.

In the first ROP I built I used those cheap 2700 AA's from eBay, I forget the name but they are in an orange and silver wrap. They really struggle with the ROP Hi bulb and quickly drop to a very yellow beam but were ok on the ROP Low.

If you want longer running build yourself a Mag85, it runs for about twice as long and it's also a bit brighter than the ROP Hi.

 

[MikeSalt]

FatTony (or anyone else), in what manner did the 2700s not fit the FM adapter? Was it their diameter, or their length that was the problem? The Nosram 2700 cells that I used in my first 2D ROP were actually too long, and I had to slightly modify the adapter. I would rather keep this adapter unmodified and use cells that fit.

Thanks for your input. Mike

 

[FatTony]

I have sent you a PM, but for everyone elses reference the Sanyo 2700 cells that I have are physically too fat to fit in to the holes.