batteries
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batteries [2018-11-22 14:08] – alfie | batteries [2018-11-26 11:57] – [Reclaimed/Recovered Batteries] tim | ||
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**DO NOT leave charging batteries unattended. Ever. Full stop.** | **DO NOT leave charging batteries unattended. Ever. Full stop.** | ||
- | Rules for using Lithium-based batteries in the lab: | + | Rules for using high-energy/ |
* Storage: | * Storage: | ||
Line 14: | Line 14: | ||
* Multi-cell batteries must be charged using a proper balancing circuit. | * Multi-cell batteries must be charged using a proper balancing circuit. | ||
* Batteries/ | * Batteries/ | ||
- | * All lithium | + | * All high energy battery |
+ | |||
+ | ===== Reclaimed/ | ||
+ | |||
+ | //todo: Safety reccomendations for recovered batteries such as the hoverboard 18650 packs.// | ||
+ | |||
+ | * Safely dismantle and inspect | ||
+ | * Check individual cell voltages | ||
+ | * Look for parallel-wired cells | ||
+ | * If internal balancer circuit is not trustworthy, | ||
===== Risk assessment ===== | ===== Risk assessment ===== | ||
This is **work in progress**, do not take it as gospel until completed. | This is **work in progress**, do not take it as gospel until completed. | ||
+ | |||
+ | Overheating, | ||
^ Risk ^ Mitigation ^ | ^ Risk ^ Mitigation ^ | ||
- | | Fire | | | + | | Over-charging |
+ | | Individual cells may be overcharged when connected in series | Balancing circuit will always be used. | | ||
+ | | Batteries in parallel may not charge at the same rate, or unexpected current may flow between batteries. | Batteries will not be charged in parallel unless they are individually monitored. | | ||
+ | | Puncture damage | Batteries will be stored in their appliance or in a designated storage box to protect them. The box will be in a visible location. Plastic " | ||
+ | | High current flows if terminals are shorted | Batteries will be stored with the terminals covered with a cap or electrical tape. | | ||
+ | | High energy density - general risk | Projects that use high capacity batteries will be fitted with isolator switches and fuses. | | ||
+ | |||
+ | ===== Reference Material ===== | ||
+ | |||
+ | The [[https:// | ||
+ | |||
+ | Tim Kerby suggested [[https:// | ||
+ | |||
+ | [[http:// |
batteries.txt · Last modified: 2024-06-26 23:12 by danshearer