Alternate Boost Containers Moderators: adafruit_support_bill, adafruit

[winter1]

I use an Ice Breakers Sours Gum box.
You only need to remove 4 pins inside the box, to fit the MintyBoost print and battery pack.
Use a cutter to make an opening for the USB plug.

Ice Breakers Sours Gum box.

IMG_0108.JPG (204.28 KiB) Viewed 4538 times

[manaughl]

I used the Little i Peppermint gum tin. It is fabulous.
I made this one for my youngest who always claims she didn't call me from her friends house because her phoned was dead...problem solved. :wink:

[dinuc]

Just noticed this thread.
I used the Altoids mint tin and changed the battery holder from two batteries to three. I used this holder from Fry's. http://www.frys.com/search?search_type=regular&sqxts=1&query_string=3+aa+battery+holder&submit.x=0&submit.y=0&cat=0






I also used a hot glue gun to secure the battery holder to the tin. It was wobbling with only the double backed foam under it.

Edit: just worked out the benefits of 3 batteries versus 2. From here, http://www.ladyada.net/make/mintyboost/power.html

For 3 batteries,
mintyboost mWh = Battery voltage (V) * Battery capacity (mAh) * Capacity derating
3 * 1.27 V * 2500 mA * 75% = 7144 mWh

Output mAh @ 5V = Battery mWh (mWh)/ 5 (V) * Boost Efficiency
7144 mWh / 5V * 80% = 1143 mAh output

# of full recharges = MB output mAh /Device Battery Capacity
1140 mAh / 1420 mAh = 0.80 times (iPhone 4)

For 2 batteries,
mintyboost mWh = Battery voltage (V) * Battery capacity (mAh) * Capacity derating
2* 1.27 V * 2500 mA * 75% = 4763 mWh

Output mAh @ 5V = Battery mWh (mWh)/ 5 (V) * Boost Efficiency
5060 mWh / 5V * 80% = 762 mAh output

# of full recharges = MB output mAh /Device Battery Capacity
762 mAh / 1420 mAh = 0.54 times (iPhone 4)

So, 3 batteries is (0.80/0.5) = 1.48 x better than 2 batteries.

Edit 2: Just worked out that I could have possibly squeezed 4 x AA battery holder in the tin. Might have to order another MintyBoost ... :wink:

For 4 batteries,
mintyboost mWh = Battery voltage (V) * Battery capacity (mAh) * Capacity derating
4* 1.27 V * 2500 mA * 75% = 9525 mWh

Output mAh @ 5V = Battery mWh (mWh)/ 5 (V) * Boost Efficiency
9525 mWh / 5V * 80% = 1524 mAh output

# of full recharges = MB output mAh /Device Battery Capacity
1524 mAh / 1420 mAh = 1.07 times (iPhone 4)

Cheers

Andrew

[Rikardo]

Here in Holland I found this tin in a Xenos shop.

[supasizefries]

Here is mine in a regular size Altoids tin:


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