3743135000

**3743 LI** Max. 16W Charger for Li-ion batteries - switch mode 

- 3-step charge control with current detection 

- Universal input voltage (90-264 VAC) 

- Wake up and low current start-up of deeply discharged batteries 

- Error indication for reverse polarity, short circuit, charging battery packs with wrong number of cells and safety timer run-out 

- With NTC input on request 

- Order plugs and mains cord separately 

- ECO-design compliance: 

- DoE and CEC 

- Approvals: 

- Medically certified 

Safety: EN 60601-1 ed. 3.1 EMC: EN 60601-1-2 ed. 4 

- UL approved 

For updates: see www.mascot.no 

## TECHNICAL SPECIFICATIONS 

## **GENERAL INPUT/OUTPUT** 

Input voltage: 90-264 VAC Line Frequency: 47 – 63Hz Switch frequency, approx.: 56 kHz Leakage current from batt. with mains switched off: 

<0,3mA @ nominal battery voltage 

Temperature range • Operating: -25 °C - +40 °C • Storage: -25 °C - +85 °C Ripple: < 100 mV p-p Dimensions (L×W×H): 108,5 × 49 × 29 mm Weight: 150g 

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MEDICAL<br>**----- End of picture text -----**<br>


## **SAFETY PROTECTION EMC** 

Protection: 

Protected against reversed polarity and short circuit proof Class II 

Insulation class: Class II Insulation voltage Primary – secondary: 4000VAC / 5700VDC Electrical safety std: EN/IEC 60335-2-29, EN 60601-1-11 EN/IEC/ANSI 60601-1 

EMC standards • Medical 

EN 60601-1-2 EN 55014-1, EN 61000-6-3 EN 55014-2, EN 61000-6-1 2-pin IEC 60320 connector C8 DC connector, battery clips, push on terminals or open ends 41 

• Emission • Immunity Input terminal: Output terminals: 

IP-code: 

## VERSIONS 

|CHARGE CONTROL<br>~~ee~~<br>~~ee~~|CHARGE CONTROL<br>~~ee~~<br>~~ee~~|Step 0 < 10min<br>(yellow)<br>~~es~~|Step 0 > 10min<br>(Red: 4 blinks)<br>~~es~~|Step 1<br>(yellow)<br>~~es es~~|Step 2<br>(Flash yellow)<br>~~es~~<br>~~es~~|Step 3<br>(green)<br>~~es~~||
|---|---|---|---|---|---|---|---|
|Cells<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|Max output<br>power (W)<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|Low Current start-up for<br>deeply discharged batt.<br>~~es~~<br>~~es~~|Battery voltage<br>too low<br>~~es ~~<br>~~es~~|Charge Current<br> ~~es es~~<br>~~es~~<br>~~ee~~|Charge Voltage<br>~~es~~<br>~~es~~<br>~~es~~|Charge term<br>when current is:<br>~~es~~<br>~~es~~|Restart<br>~~es~~<br>~~|~~|
|1<br>~~ee~~<br>~~ee~~|6W<br>~~ee~~<br>~~ee~~|CC 100mA±25mA<br>when batt. < 3V|0A/0V|1.5A ±0.1A<br>~~ee~~|4.2V ±0.1V<br>~~es~~|< 100mA<br>or max. 1 hr.<br> ~~es~~<br>~~ee~~|4.1V<br>~~|~~|
|2<br>~~ee~~<br>~~ee~~<br>~~ee~~|13W<br>~~ee~~<br>~~ee~~<br>~~ee~~|CC 100mA±25mA<br>when batt. < 6V||1.5A ±0.1A<br>~~ee~~<br>~~a~~|8.4V ±0.1V<br>~~es ~~||8.2V<br>~~|~~<br>~~|~~|
|3<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|15W<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|CC 100mA±25mA<br>when batt. < 9V||1.2A ±0.1A<br>~~ee~~<br>~~a~~<br>~~a~~<br>~~ee~~|12.6V ±0.1V||12.3V<br>~~|~~<br>~~|~~<br>~~|~~<br>~~|~~|
|4<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|16W<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|CC 100mA±25mA<br>when batt. < 12V||1.0A ±0.1A<br>~~a~~<br>~~a~~<br>~~ee~~<br>~~ee~~|16.8V ±0.1V||16.4V<br>~~|~~<br>~~|~~<br>~~|~~<br>~~[|~~|
|5<br>~~ee~~<br>~~ee~~<br>~~ee~~|16W<br>~~ee~~<br>~~ee~~<br>~~ee~~|CC 100mA±25mA<br>when batt. < 15V||0.8A ±0.1A<br>~~a~~<br>~~ee~~<br>~~ee~~|21V ±0.1V||20.5V<br>~~|~~<br>~~|~~<br>~~[|~~|
|6<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|16W<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|CC 100mA±25mA<br>when batt. < 18V||0.66A ±0.1A<br>~~ee~~<br>~~ee~~<br>~~a~~<br>~~**e**e~~|25.2V ±0.1V||24.6V<br>~~|~~<br>~~[|~~<br>~~|~~<br>~~|~~|
|7<br>~~ee~~<br>~~ee~~<br>~~ee~~|17W<br>~~ee~~<br>~~ee~~<br>~~ee~~|CC 100mA±25mA<br>when batt. < 21V||0.56A ±0.1A<br>~~ee~~<br>~~a~~<br>~~**e**e~~<br>~~s~~|29.4V ±0.1V<br>~~ee~~||28.7V<br>~~[|~~<br>~~|~~<br>~~|~~|
|14<br>~~ee~~<br>~~ee~~|18W<br>~~ee~~<br>~~ee~~|CC 80mA±25mA<br>when batt. < 42V||0.3A ±0.1A<br>~~a~~<br>~~**e**e~~<br>~~s~~|58.8V ±0.1V<br>~~ee~~|< 56mA<br>or max. 1 hr.<br>~~ee~~|57.4V<br>~~|~~<br>~~|~~|



**TS090419** 

**Mascot AS Headquarters • PO Box 177 • 1601 Fredrikstad NORWAY • +47 69 36 43 00 • sales@mascot.no • www.mascot.no** 

## **Li-Ion Battery Chargers** 

This new range of chargers for Li-Ion batteries uses a 3-stage charging profile with a microcontroller to maximise battery performance. They are also capable of waking up deeply discharged batteries and soft-start charging with low current until voltage is normalized. The new chargers are all medically certified according to EN 60601-1 edition 3.1 and EMC EN 60601-1-2 ed. 4 and are also UL-approved, and meet the latest DoE and CEC energy efficiency requirements. 

Alternative chargers that terminate the charge on reaching the battery’s threshold voltage can shorten charging time but always leave some capacity unfilled. The 3-stage charge control first restores the full battery voltage and then applies the saturation charge needed to fill the battery completely. This ensures the longest possible battery run-time. These chargers also features a single 3-colour LED indicator light for charge, error or standby status. 

Below are shown the charging characteristics and LED indications 

## Charging characteristics and LED indication 

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INDICATOR:<br>INDICATOR: YELLOW  INDICATOR: GREEN<br>FLASHING YELLOW<br>Charge Voltage Battery Voltage<br>No voltage,<br>Battery Voltage no current<br>from charger!<br>Charge Current<br>Start Current Cut-Off Current  No current (0A)<br>Low Current Start-Up at Vbatt <3V/cell<br>Error Mode if <3V/cell after 10 minutes<br>Step 0 Step 1 Step 2 Step 3<br>ET Start Timer(10 min) CC Charge CV Charge (max1 h) Charge complete<br>ee Safety Timer (72 hours) s—‘isS<br>**----- End of picture text -----**<br>


BATTERY NOT CONNECTED INDICATIONS 

Battery not connected is indicated by FLASHING GREEN. In this mode charger will apply short pulses attempting to wake up deeply discharged batteries. 

## ERROR INDICATIONS 

2 red blinks: Battery is connected to charger with wrong polarity! 3 red blinks: Charger output is shorted. Check output cable connection! 4 red blinks: Battery voltage is low. Check battery status or voltage. 5 red blinks: Safety timer has run out. Check battery status or capacity. LED off: Battery voltage is too high. Check battery voltage. 

## WAIT MODE INDICATIONS 

Yellow with 1 red blink: Battery temperature is too low (<0°C) Yellow with 2 red blink: Battery temperature is too high (>45°C) 

**TS090419** 

**Mascot AS Headquarters • PO Box 177 • 1601 Fredrikstad NORWAY • +47 69 36 43 00 • sales@mascot.no • www.mascot.no** 

## Exchangeable AC plugs for 3743LI 

**EU plug adapter** Part no. 127000 Ath —_ Weight: 20,9 g 

**US plug adapter** Part no. 127100 Weight: 13,4 g 

G — 

## **UK plug adapter** 

Part no. 127200 Weight: 29,2 g 

**AUS plug adapter** Part no. 127300 Weight: 21,4 g 

**2-pin IEC 60320 C7 mains cord** 1800 mm 

EU part no. 131306, UK part no. 131148, US part no. 131368, AU part no. 013108 

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49 mm50 mm<br>29 mm37 mm<br>108.5 mm124 mm<br>**----- End of picture text -----**<br>


**TS090419** 

**Mascot AS Headquarters • PO Box 177 • 1601 Fredrikstad NORWAY • +47 69 36 43 00 • sales@mascot.no • www.mascot.no**