Huawei U2900 User Manual page 40

Use the AC power supply defined in the specifications of the

charger. An improper power voltage may cause a fire or a
malfunction of the charger.
Do not connect two poles of the battery with conductors, such

as metal materials, keys, or jewelry. Otherwise, the battery may
be short-circuited and may cause injuries and burns on your
body.
Do not disassemble the battery or solder the battery poles.

Otherwise, it may lead to electrolyte leakage, overheating, fire,
or explosion.
If battery electrolyte leaks out, ensure that the electrolyte does

not touch your skin and eyes. If the electrolyte touches your
skin or splashes into your eyes, wash your eyes with clean
water immediately and consult a doctor.
If there is a case of battery deformation, color change, or

abnormal heating while you charge or store the battery,
remove the battery immediately and stop using it. Otherwise, it
may lead to battery leakage, overheating, explosion, or fire.
If the power cable is damaged (for example, the cord is

exposed or broken), or the plug loosens, stop using the cable
at once. Otherwise, it may lead to an electric shock, a short
circuit of the charger, or a fire.
Do not dispose of batteries in fire as they may explode.

Batteries may also explode if damaged.
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