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A. INSTRUCTION

The  GIANDEL  Power  inverter  product  line  is  used  for  back-up  power.  The  power 

inverter  converts  DC  (direct  current/car  battery)  power  into  AC  (alternating  current) 
power that can be used for running a wide variety of tools and appliances. This inverter is 
perfect for providing mobile power in cars, boats and work trucks. The inverter can also 
be  utilized  as  a  back-up  source  of  electricity  in  the  event  of  an  electrical  failure  or  for 
several off-grid applications such as camping or in your RV.

B.  Please  read  this  instruction  manual  carefully  and  make  sure  your  inverter  is 

installed properly before using.

C.  Warning and safety

1)   Read the manual before connecting this inverter and keep it for future reference.
2) Don't put the inverter under sunlight, near a heating source, wet or humid environment. 
3) The case housing of inverter will be hot while using. Do not allow flammable materials 

to contact the inverter, such as clothing, sleeping bags, carpet or any other flammable 
materials. The heat from the inverter can damage these items.

4)  The power inverter is designed to be used with a negative ground electrical system! 

Don't  use  with  positive  ground  electrical  systems  (the  majority  of  modern 
automobiles, RVs, trucks and boats are negative ground).

5)   Do not disassemble the unit: it may cause fire or electric shock.
6)   This device should only be serviced by a qualified technician. This item does not have 

any serviceable parts.

7)    Prevent  body  contact  with  grounded  surfaces  such  as  pipes,  radiators,  ranges,  and 

refrigerator enclosures during installation.

8)    Do  not  operate  the  inverter  if  under  the  influence  of  alcohol  or  drugs.  Read  warning 

labels on prescriptions to determine if your judgement or reflexes are impaired while 
taking drugs. If there is any doubt, do not operate the inverter.

9)  People  with  pacemakers  should  consult  their  physician(s)  before  using  this  product. 

Electromagnetic fields in close proximity to a pacemaker could cause interference to 
or failure of the pacemaker.

10)  Keep  the  inverter  well-ventilated.  Do  not  place  any  objects  on  top  of  or  next  to  the 

inverter or allow anything to cover the cooling fans; doing so can cause the inverter to 
overheat,  causing  a  potential  fire  hazard  and/or  damage  to  the  inverter.  Leave 
adequate ventilation space underneath the inverter as well; thick carpets or rugs can 
obstruct air flow, causing the inverter to overheat.

11) Avoid unintentional starting. Be sure the switch is in the OFF position when not in use 

and before plugging in any appliance.

12)  Keep  inverter  away  from  children.  Don't  install  the  inverter  where  it  is  accessible  to 

children.

13) The power inverter will output the same AC power as utility power, please treat the AC 

outlets  as  carefully  as  you  would  your  home  AC  outlets.  Do  not  put  anything  other 
than an electrical appliance into the output terminal.  It may cause shock or fire.

14)Disconnect the battery and inverter when not in use.

Note: 

Performance  of  this  unit  may  vary  depending  on  the  available  battery  power  or 

appliance wattage.

1.

2.

DC Input Voltage

Output Wave Form

Output Power

Output Voltage

Surge Power 

Over Load power

Efficiency

No Load Current

Battery Low Alarm

Battery Low Shutdown

Input Over Voltage Shutdown

Operating Temperature

Over Temperature Protection

FAN

USB Output

Internal DC Input Fuse

Power Switch

Cigarette Lighter Cable

Dimensions (LxWxH)

Net Weight

 PM-300A

D. Features

Model

(Automatic Recovery/Shutdown)

1)Adopt advanced MPU control.

12V (9.8-16V)

Modified sine wave

300W

AC110-120V 60Hz

600W for 40 milsec

400W

about 90%

0.25A

DC 9.8 

±

 0.5V

32-113° F

149° F 

±

 41° F

Temperature control 104° F

±

 41° F

Must Be Fitted, Use 30A Maximum

ON/OFF Control

YES

5.63” x 3.42” x 1.97”

1.2 lb

DC 9.5 

±

 0.5V

(Automatic Recovery at 12.5VDC)

DC16

±

0.5 V

(Automatic Recovery at 14VDC)

5 VDC, Max 4.8A(Dual 2.4A)

Automatic identification charging IC

Warning: 

The  warnings,  cautions,  and  instructions  discussed  in  this  instruction  manual 

cannot cover all possible conditions and situations that may occur. It must be understood 
by  the  operator  that  common  sense  and  caution  are  factors  which  cannot  be  built  into 
this  product,  but  must  be  supplied  by  operator.  Guard  against  electric  shock.  Do  not 
open the metal case; risk of electric shock. 

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