This is a Resource Page, so that means it's a Mish-Mash of Battery Resources found on the Interweb. I'm a huge supporter of Open Source and Creative Commons resources. This is another way of saying Free, Equitable and Accessible resources... 📽️ 🎧 📰 📖 📝🛠️
What is the best way to maintain a battery and extend it's life?
Is it important to understand the differences between all the battery technologies?
Author: Jim Burnham - TopClown@STEAMClown.org. License: Distributed as Open Source.
Resources - 📰 Slide Presentation
No explicit prerequisite course work or coding knowledge is required, but students are be able to read and research about Battery technology.
Primer: "Aaron, I can imagine no way in which this thing could be considered anywhere remotely close to safe. All I know is I spent six hours in there and I'm still alive... You still want to do it?"
As with any activity, please make sure you are using appropriate safety equipment. If you are coding, writing, reading, or working a lab, make sure you stand up and stretch every hour or so, Please consider any safety issues connecting to a Raspberry Pi, Arduino, computers and other electronic equipment.
Lipo
Ni-MH
ChatGPT - What is a battery?
ChatGPT Responds the the question:
How should a teacher store lithium ion batteries over the summer. What should the storage voltage be?
Storing lithium-ion batteries properly over the summer is important to maintain their longevity and safety. Here are the guidelines a teacher should follow:
Storage Conditions:
Charge Level:
Store the batteries at a charge level between 40% to 60%. This range is often recommended to prevent the battery from being either too full or too empty, both of which can stress the battery and reduce its lifespan.
Voltage:
For lithium-ion batteries, the ideal storage voltage is typically around 3.7 to 3.9 volts per cell. This usually corresponds to a charge level between 40% to 60%.
Temperature:
Store the batteries in a cool, dry place. The ideal temperature range for storage is between 15°C to 25°C (59°F to 77°F). Avoid extreme temperatures, as high temperatures can cause capacity loss and low temperatures can increase internal resistance.
Environment:
Keep the batteries in a dry environment. Avoid storing them in areas with high humidity or in direct sunlight.
Isolation:
Store batteries in a non-conductive container or individually in anti-static bags to prevent short circuits. Avoid storing them in metal containers unless they are specifically designed for battery storage.
Protection:
Ensure that the battery terminals are not exposed to avoid short circuits. Cover the terminals with tape if necessary.
Steps for Storage:
Charge to Proper Level:
Before storing, discharge or charge the batteries to about 40% to 60% of their capacity.
Check the Voltage:
Use a multimeter to verify that the voltage per cell is within the 3.7 to 3.9 volts range.
Prepare the Storage Area:
Find a cool, dry, and safe place for storage. Ensure it is away from flammable materials.
Store Properly:
Place the batteries in a non-conductive container or use individual anti-static bags.
Monitor Periodically:
If the storage period is extended beyond a few months, periodically check the voltage and recharge if necessary to maintain the recommended charge level.
By following these guidelines, the teacher can help ensure that the lithium-ion batteries remain in good condition over the summer break, ready for use when the new school year begins.
Complete Guide for Lithium ion Battery Storage
Store them at a cool temperature, not below 0°C. Storage at 5°C to 15°C is optimal.
Store them at 40% to 50% capacity.
Since lithium batteries self-discharge, it is recommended that they must be recharged every 12 months.
Mechatronics - <topic> - 📖 Lesson Tutorial
NIMH as no cell memory but too low a voltage can harm the cells. If you don't plan to use it for a while be sure to leave some charge in it. Good rule is to discharge NIMH to .9V per cell, that comes to 5.4volt for the 7.2 volt, 6 cell pack.
When you want to use it discharge then peak charge
discharge and charge at about 10% of the rated mAh. So a 3600mAh should discharge at about 360mA, which given Ohms you could use a 20 ohm 5 watt resistor, If you want closer to 1 Amp, use a 10 ohm, this will give you a starting current of about 720mA. 5 ohms will give you about 1.4Amps
How to Charge NiMH Batteries - Use a smart charger
A Forum Post - charge and possibly condition older NiMH batteries
YouTube Links - 📽️ Video / 🎧
Mechatronics - <topic> - 📰 Slide Presentation (Coming Soon)
Mechatronics - <topic> - LAB #1 - 🛠️ LAB Activity
Mechatronics - <topic> - LAB #2 - 🛠️ LAB Activity
Mechatronics - <topic> - LAB #3 - 🛠️ LAB Activity
Check with your instructor for the method to turn in this assignment... More than likely, you will have an assignment in Canvas, Google classroom or some other LMS, where you can submit your writing assignment.
Sid Bar With jim The STEAM Clown: This will be an ever evolving resource list. I'll try to keep it current and relevant. Please let me know if any resource links are broken or not accessible. Use this email link to let me know what is broken @ TopClown@STEAMClown.org
<list Standards>
I’ll work on getting these in, but it’s the last thing I want to work on :-) When I have them updated, I’ll move to the top of the Lesson Plan.
<list Standards>
NGSS: <list standard numbers>
California CTE Standards: <list standard numbers>
Related Instructional Objectives (SWBAT): <list standard numbers>
CCSS: nnn, RSIT: nnn, RLST: nnn, WS: nnn, WHSST: nnn, A-CED: nnn, ETS: nnn <list standard numbers>
Main Standard:
Priority standards:
National Standards:
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