moemoe
Newly Enlightened
- Joined
- Mar 22, 2014
- Messages
- 5
Hi,
I'm currently thinking about the best solution to use my Mag 4D with LiIons. Voltage is not really an issue, as it will be handled by a buck/boost constant current source.
I want to leave the original case unmodified, as I want to keep the possibility to change back to D cells if no charger is available.
Therefore, the maximum battery dimensions are 35x~250mm.
In general, I got the feeling that other formats than 18650 are rarely available, and proper tests are even harder to find.
My thoughts so far are:
4x25500 -> 220mm, ~3,5Ah => 51,8Wh http://www.fasttech.com/products/14...-37v-5500mah-rechargeable-lithium-battery-1-p, ~31$, 0,6$/Wh
3x26650 -> 204mm, ~4Ah => 44Wh, http://www.fasttech.com/products/0/...ng-26650-37v-4000mah-rechargeable-li-ion-batt, ~24$, 0,55$/Wh
4x32600 -> 240mm, ~4Ah => 60Wh, no source?
3x32650 -> 200mm, ~5,5Ah => 61Wh, http://www.fasttech.com/products/14...eilong-32650-3-7v-6000mah-rechargeable-li-ion ~46$, 0,75$/Wh
So, it looks like I should go with 26650 (cheaper) or 25500 (slightly more expensive, but more capacity). Are there any recommendation about better cells or other solutions?
Thanks
Moritz
I'm currently thinking about the best solution to use my Mag 4D with LiIons. Voltage is not really an issue, as it will be handled by a buck/boost constant current source.
I want to leave the original case unmodified, as I want to keep the possibility to change back to D cells if no charger is available.
Therefore, the maximum battery dimensions are 35x~250mm.
In general, I got the feeling that other formats than 18650 are rarely available, and proper tests are even harder to find.
My thoughts so far are:
4x25500 -> 220mm, ~3,5Ah => 51,8Wh http://www.fasttech.com/products/14...-37v-5500mah-rechargeable-lithium-battery-1-p, ~31$, 0,6$/Wh
3x26650 -> 204mm, ~4Ah => 44Wh, http://www.fasttech.com/products/0/...ng-26650-37v-4000mah-rechargeable-li-ion-batt, ~24$, 0,55$/Wh
4x32600 -> 240mm, ~4Ah => 60Wh, no source?
3x32650 -> 200mm, ~5,5Ah => 61Wh, http://www.fasttech.com/products/14...eilong-32650-3-7v-6000mah-rechargeable-li-ion ~46$, 0,75$/Wh
So, it looks like I should go with 26650 (cheaper) or 25500 (slightly more expensive, but more capacity). Are there any recommendation about better cells or other solutions?
Thanks
Moritz
