Well, lets get the ball rolling with lipos....
Learned the hard way about how to kill a lipo battery during some maintaince on my gun. Long story short, I was testing the electronics of the gun and my battery was already half dead. So by the time I realized that the source of my gun not firing was due to a dead battery.... It was already to late

now it doesn't charge and I have a new one on the way. But because of this f up, I ordered a discharge indictor with alarm that everyone should have.
Dear Travis Fast
Thanks for shopping at our store
Your order details are:
1x #DL-Volt-Alarm/18987 On Board Lipoly Low Voltage Alarm (2s~4s) = 1.92
Paypal Express
International (Registered) Air Mail 0 - 100g 3.99
Taxes: USD000
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Total: USD5.91
Hobbyking.com.
Hope this helps someone not experience what poor lipo maintaince feels like!