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Printed Circuit Board Assembly, Rework, Repair. Battery Chargers Evaluation

Battery Chargers Evaluation and Failure Analysis

Printed Circuit Solution
Battery Chargers Evaluation and Failure Analysis
Map and Directions
How to Order
LINKs
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Our experts can conduct an evaluation, failure analysis, repair, recommendation, and comparison of battery chargers and power supplies.

 

Bellow you can find some samples of Battery Chargers Evaluation Reports.
  
                                          Data in the table is for 12V/ 10A Battery Charger

DESCRIPTION

GOOD

OK

BAD

PRICE

 

 

 

Size / weight

 

 

16.6”x10.7”x5.6”

AC Voltage Range

115 or 230v

with AC wires reconnection

 

2 or 3 Stage Charger

 

3

 

Output Current and Voltage

 

max 9.8A at 12V

 

AC Current

 

2.6A AC at 10A DC load

 

Waterproof

 

 

NO

Indicator of Charging Current,

 

DC Volt and Amp meters

 

AC Voltage Regulation

 

 

X

Reverse Polarity Protection

Yes

 

 

Output Short Circuit Current

 

10.5Amps DC

@4.2Amps AC

Temperature Compensation

Available

 

 

Output Ripple

 

 

x

Use as a Power Source

 

 

NO

EMI

 

 

No class A

RFI

 

-

 

UL, CE

 

UL, CSA

 

Temperature on case

 

ok

 

Temperature inside

 

ok

 

Efficiency

 

 

58.6%

Spark protection

Yes

 

 

TIMER

 

No

 

WARRANTY

 

 

 

                 Disadvantages:

1.       The transition point Absorption/Float is 4.7A. A battery can be charged to about 50% of full capacity. See charge curve below.

2.        A battery will be discharged when unplugged charger is connected to battery for long time. Back flow current is 80mA-200mA

3.       Type of batteries: Lead-Acid or Nickel-Cadmium only.

 

Charge curves.
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Output Current, Voltage and Amp-Hours

Sample #2
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