Parallax sells a nice item for this called the Boe-Boost Module. It basicly clips into the existing BoeBot battery
pack and lets you put in a 5th AA-sized battery.
The item number is 30078
You can find it by doing a search on the Parallax site for the above number.
In addition... If you've got a single battery holder already, you can just put them in series with the main holder... that would
most likely require soldering though.
The disappointing thing about NiMh and NiCad batteries is that the battery manufacturers seem to want make them last less than 50% as long as the Alkaline. No matter what you do, you will have to change batteries more often.
I find it very interesting that you can NEVER find an Alkaline battery with an mAmp/Hour rating attached.
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PLEASE CONSIDER the following:
Do you want a quickly operational black box solution or the knowledge included therein?······
···················· Tropically,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan
Here is an informative link regarding batteries and mah:·www.starbatteries.com/batteryfaqs.html.·Alkaline batteries typically have a rating of 2500 mah rating.· We have found that the Kirkland batteries last just as long as the Duracell batteries if not longer and are cheaper.·
Comments
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- Stephen
pack and lets you put in a 5th AA-sized battery.
The item number is 30078
You can find it by doing a search on the Parallax site for the above number.
In addition... If you've got a single battery holder already, you can just put them in series with the main holder... that would
most likely require soldering though.
Thus, 4 alkalines give you 6 volts -- 7.5 if you use 5 of them.
4 NiMh give you 4.8 volts -- which is too close to the brown-out voltage value. 5 gives you 6 volts.
7.5 volts isn't going to help you much, it'll just increase the amount of heat disappated in the voltage regulator.
I find it very interesting that you can NEVER find an Alkaline battery with an mAmp/Hour rating attached.
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PLEASE CONSIDER the following:
Do you want a quickly operational black box solution or the knowledge included therein?······
Dave
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Dave Andreae
Parallax Tech Support·
Bean (Hitt Consulting) has some 5 AA holders for sale (which are very hard to find). They are also a good solution.
See here http://www.hittconsulting.com/miscforsale.html·- they fit perfectly under the BoeBot.
The Boe-Boost is nice too. I have both so I could check it out for myself.·
Five regular Alkaline batteries are supposed to discharge more fully than four. Five also lets you use the rechargeables too!
Have fun!
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Whit+
"We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney
Post Edited (Whit) : 2/22/2008 11:22:54 PM GMT