Sentry SFR Series Battery Chargers SFR2440/3X
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Sentry SFR Series Battery Chargers SFR2440/3X

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The line of Sentry SFR chargers is in an elite class, setting the standard for dependable battery chargers. Sentry chargers are designed to operate for decades in the harsh marine environment. They are completely field serviceable and come with a 2-year parts and labor warranty.

Sentry SFR battery chargers are designed for fully automatic, unattended operation, with charging outputs for Lead-Acid, AGM, Gel and Lead Calcium batteries. Once batteries reach full charge, Sentry chargers turn off completely. There is no output trickle to overcharge or dehydrate batteries. Additionally, optional temperature sensor reduces output to prevent overcharging.

Sentry chargers have negative ground with three outputs, allowing three separate banks of batteries to be charged simultaneously. A fourth output is available on some models.

For long voyages, Sentry SFR is the charger to have aboard. The manual/ automatic switch allows you to bypass the voltage regulating circuit, and most repairs can be accomplished with just a few spare parts.

Front-panel includes LED charge status and fault indicators and manual/ automatic selector switch.

All models are current limited and ignition protected for engine room installations.

Features

  • Available in 12VDC, 24 VDC and 32 VDC models
  • Charging outputs for Lead-Acid, AGM, Gel and Lead Calcium
  • Full cutoff when full charge reached - no “trickle” charge
  • Temperature sensor reduces output to prevent overcharging
  • Ignition protected for engine room installations
  • Three bank charging (4 bank option available for 60 amp models)
  • LED charge status and fault indicators
  • Optional volt and ammeter available
  • Current limiting protection
  • Drip proof cabinet
  • AC fuse protection
  • Automatic reset DC Breaker
  • Reliable ferro-resonant technology
  • Field repairable for long voyages
  • Two year parts and labor warranty
Model SFR2440/3X
Type of Battery Lead Acid/Gel/AGM
DC Output Voltage 24V
DC Output Current 40 A
Lead-Acid/Gel (CI/CO) 25.0/28.0
AGM (Cut In/Cut Out) 25.4/28.5
# Output Banks 3
AC Input Voltage *115/230 VAC
AC Input Current 13/6.5 A
Input Frequency 60 Hz
Height in/mm 16.25 / 413
Width in/mm 13.75 / 184
Depth in/mm 7.25 / 184
Weight lb/kg 39 / 17.7
DC Output Fuse Yes
AC Input Fuse ****15A
Temp Sensor Comp Yes
CE Approved Yes
Ignition Protected Yes
Internal Fan Yes
Current Limited Yes
Battery Isolation Yes
Charger Indicators LED
Full/Charging Indicator Yes
Fault Indicator Yes
Manual/Auto Switch Yes
Field Repairable  Yes
Warr.-Parts & Labor 2


NOTE: All Sentry models include a control circuit switch for charging Flooded Lead-Acid, AGM, Gel and Lead Calcium batteries. Refer to Sentry SFR manual for battery type charging.
*NOTE: voltage is changed with a rocker switch.
**NOTE: frequency is changed with a slide switch.
***NOTE: 4 outputs available on special order.
****NOTE: AC fuses rated slow blow at 250VAC.

The line of Sentry SFR chargers is in an elite class, setting the standard for dependable battery chargers. Sentry chargers are designed to operate for decades in the harsh marine environment. They are completely field serviceable and come with a 2-year parts and labor warranty.

Sentry SFR battery chargers are designed for fully automatic, unattended operation, with charging outputs for Lead-Acid, AGM, Gel and Lead Calcium batteries. Once batteries reach full charge, Sentry chargers turn off completely. There is no output trickle to overcharge or dehydrate batteries. Additionally, optional temperature sensor reduces output to prevent overcharging.

Sentry chargers have negative ground with three outputs, allowing three separate banks of batteries to be charged simultaneously. A fourth output is available on some models.

For long voyages, Sentry SFR is the charger to have aboard. The manual/ automatic switch allows you to bypass the voltage regulating circuit, and most repairs can be accomplished with just a few spare parts.

Front-panel includes LED charge status and fault indicators and manual/ automatic selector switch.

All models are current limited and ignition protected for engine room installations.

Features

  • Available in 12VDC, 24 VDC and 32 VDC models
  • Charging outputs for Lead-Acid, AGM, Gel and Lead Calcium
  • Full cutoff when full charge reached - no “trickle” charge
  • Temperature sensor reduces output to prevent overcharging
  • Ignition protected for engine room installations
  • Three bank charging (4 bank option available for 60 amp models)
  • LED charge status and fault indicators
  • Optional volt and ammeter available
  • Current limiting protection
  • Drip proof cabinet
  • AC fuse protection
  • Automatic reset DC Breaker
  • Reliable ferro-resonant technology
  • Field repairable for long voyages
  • Two year parts and labor warranty
Model SFR2440/3X
Type of Battery Lead Acid/Gel/AGM
DC Output Voltage 24V
DC Output Current 40 A
Lead-Acid/Gel (CI/CO) 25.0/28.0
AGM (Cut In/Cut Out) 25.4/28.5
# Output Banks 3
AC Input Voltage *115/230 VAC
AC Input Current 13/6.5 A
Input Frequency 60 Hz
Height in/mm 16.25 / 413
Width in/mm 13.75 / 184
Depth in/mm 7.25 / 184
Weight lb/kg 39 / 17.7
DC Output Fuse Yes
AC Input Fuse ****15A
Temp Sensor Comp Yes
CE Approved Yes
Ignition Protected Yes
Internal Fan Yes
Current Limited Yes
Battery Isolation Yes
Charger Indicators LED
Full/Charging Indicator Yes
Fault Indicator Yes
Manual/Auto Switch Yes
Field Repairable  Yes
Warr.-Parts & Labor 2


NOTE: All Sentry models include a control circuit switch for charging Flooded Lead-Acid, AGM, Gel and Lead Calcium batteries. Refer to Sentry SFR manual for battery type charging.
*NOTE: voltage is changed with a rocker switch.
**NOTE: frequency is changed with a slide switch.
***NOTE: 4 outputs available on special order.
****NOTE: AC fuses rated slow blow at 250VAC.

Shipping

We can ship to virtually any address in the world. There are restrictions on some products and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates based on the availability of your items and the shipping options you choose. Depending on the shipping provider of your choice, shipping dates and estimates may appear on the shipping quotes page.

Returns

You may return most new, unopened items within 30 days of the delivery for a refund, returns made within 30 days of purchase will be refunded to the original type of payment used, after 30 days only store credit will be granted. A 15% restocking fee will be applied due to the need for inspection, repackaging, and restocking.

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the item. We will respond quickly with instructions on how to return your item(s) and make sure they come back on its original packing and they are properly packaged. We will replace defective products and exchange for the same model and style only.

Return shipping costs are covered by the customer unless the product is defective from the manufacturer or damaged by shipping.

Return on Electronics - Serial Number Policy

On returns of all electronics, serial numbers must match with serial number of product originally shipped and will undergo inspection; if serial numbers are not matching, a refund will not be issued.

Damaged or Missing Goods

We thoroughly inspect items before shipping, and will not send out damaged packages. While we take extra measures to ensure safe and secure shipment of your product, issues during shipment - while rare - are possible. We suggest you thoroughly inspect the package upon arrival before accepting delivery. If severe damage is apparent, the item should be refused during delivery “due to damaged packaging”. If your parcel is left without a signature and damage is found, contact us within 24-48 hours and before opening, in order to help process the claim as soon as possible.