Buyer’s guide

Emergency pump kit

Sump pumps are designed to reduce the risk of water ingress in basements and protect homes from damage caused by flooding. However, it’s important to bear in mind that since pumps require electricity to function, it’s essential to have a plan B for when the power goes out.

After reading this buyer’s guide, you’ll be able to make an informed decision as to how to protect your house should the unexpected happen.

It’s essential to have a plan B
option 1

12 V Emergency pump

This option involves adding a 12 V emergency pump, as well as a battery and charger, to your existing pump system. If the power goes out, the new 12 V pump will take over and the charger will recharge the battery as soon as the electricity comes back on.

Advantages

  • Excellent performance at an affordable price
  • The emergency pump can take over if your existing pump breaks
  • This emergency system is often accepted by insurance companies in case of a claim (check with your insurer)
  • Since the pump is powered by a 12V battery, it can run for longer

Remember

12 V pumps aren’t as powerful as sump pumps

Equipment

12 V pump kit + batteries + charger

Perfect for the majority of houses in normal flood-prone areas

option 2

Inverter / charger system

As previously mentioned, sump pumps are more powerful than 12 V emergency pumps. With this is mind, if your house is in an area where there’s a higher risk of flooding, it’s worth noting that you can add an inverter/charger system to your existing sump pump.

In addition to providing the same amount of power as a sump pump, this option also allows you to connect other devices in your house (lights, fridge, freezer, Wi-Fi, etc.) to your system in the event of a power cut.

Advantages

  • The back-up system is just as powerful as your sump pump
  • Can deal with a larger amount of water
  • Speedy battery recharge when the electricity comes back on
  • Often accepted by insurance companies in case of a claim (check with your insurer)
  • Allows you to install a bigger battery bank for more reserve energy
  • Ideal for confined spaces where you can’t install a second pump
  • You can get the very most out of your system by connecting it to your electrical panel to power other devices in your house in the event of a power cut (lights, fridge, freezer, Wi-Fi, etc.).

Remember

The sump pump is more powerful but must convert power from DC to AC (120V), which requires more energy from the battery.

This system should be installed by a professional.

Equipment

Your current sump pump + inverter/charger system + batteries

  • Perfect for those who want peace of mind and as much power as possible.
  • Homeowners who want to back up other devices in the event of a power cut.

How to choose a 12 V emergency pump

If you have a ½ HP pump and a pipe exit that’s less than 5 feet tall:

An emergency pump that can process 2000 GPM (gallons per minute) would be ideal for you.

Consumption per hour: 6.2 A

Recommended model
Flotec FDC20P emergency pump kit

This easy-to-install kit includes:

  • Maintenance charger
  • Pipe fitting
  • 2000 GPM pump
  • Battery case

Remember

The charger included in this kit is a maintenance charger. In the event of a long power cut that drains your battery, the charger wouldn’t be powerful enough to recharge it.

Solution

  • Use an intelligent charger to recharge the battery
  • Bring your battery to Batteries Expert and our team will recharge it for you

Budget

$325 to $500

Depending on whether you need extra connections.

*Battery and installation not included

If you have a pump with over ½ HP, or a pipe exit that’s over 5 feet tall:

We recommend a 4000 GPH pump

Consumption per hour: 15.5 A

Recommended model
KIT-RM4000

A more powerful kit that includes:

  • 4000 GPH pump
  • Intelligent charger EWC12-148
  • Battery case
  • Connections

Remember

This pump is a bit trickier to install than the FPDC20 but comes with a more powerful charger that will fully recharge your battery in the event of a long-lasting power cut.

Budget

$660 to $800

Depending on whether you need additional connections.

*Battery and installation not included.

What elements make up an inverter / charger system?

Inverter / charger

In addition to converting the battery power to 120 V for your pump, the inverter/charger automatically switches between power sources in the event of a power cut and recharges your batteries when the electricity comes back on.

We strongly recommend pure sine wave inverters for sump pumps.

Fuse and fuse holder

The fuse will protect your equipment in the event of a power surge. For your system to be ultra-safe, it’s important to install a fuse between the battery and the inverter.

Batteries

The batteries provide you with a supply of energy when the power goes out. It’s important to choose a battery bank that will provide you with the power you need for the right amount of time.

There are a variety of different batteries available on the market, all of which are designed for different needs and budgets.

Samlex EVO-1212F

Connection and installation diagram of the emergency system with inverter / charger

If you have a sump pump with ½ HP (or less) and a pipe exit that’s 5 feet tall (max.):

A 1200 W inverter / charger is recommended

Recommended products
Inverter/charger Samlex EVO-1212F 1200 W pure sine wavewith CSA power outlet

This easy-to-install kit includes:

  • Electric connections
  • Circuit breaker and protection

Average consumption

½ HP: 46 A on a 12 V battery bank

  • 115 V x 4 A = 460 watts
  • Maximum loss during voltage conversion = 20%
  • Total consumption (including loss): 552 W/12 V = 46 A

Remember

This inverter / charger is designed with a connection plug that complies with the CSA standard (120V plug). This allows you to connect your sump pump directly to the unit.

Budget

$1250 to $1500

Depending on whether you need additional connections

*Battery bank and installation not included

If you have a pump with more than ½ HP and a pipe exit that’s over 5 feet tall:

A 2200 W inverter / charger is recommended

Recommended products
Inverter/charger Samlex EVO-2212 2200W

This easy-to-install kit includes:

  • Electrical connection
  • Fuse and protection

Average consumption

70 A from 12 V batteries for ¾ HP pumps

  • 115 V x 6 A = 690 watts
  • Maximum loss during voltage conversion = 20%
  • Total consumption (including loss): 828 W / 12 V = 70 A

Remember

Can be connected to a generator.

Can be connected to your electrical panel to power other 120 V devices in your house in the event of a power cut.

Since this product is a “hardwire” inverter, you must connect the sump pump to a junction box or an electrical panel.

Budget

$2000 to $2300

Depending on whether you need additional connections.

*Battery bank and installation not included

Here are a few tips to help you choose the right battery:

Average power cut

In Quebec, the average power cut lasts 6 hours. Of course, this can vary from one region to another, but this gives you a good idea of the amount of time you need to cover.

How to get the most out of your battery:

We strongly recommend that you avoid discharging your battery below 50% of its capacity. Not only will the battery charge better, but it will also last longer (increased lifetime) and will leave you with some leeway in extreme situations. The time calculations are based on someone who uses 50% of the capacity of their battery.

15-30 minutes

According to the amount of water, a pump doesn’t necessarily pump at the same rate throughout the power cut. For example, it may only pump for 15 to 30 minutes per hour. Keep this information in mind when choosing your batteries.

Calculation tableBattery life

This table will give you an idea of how long different batteries last according to the power of the battery and if the pump runs constantly, or for 15/30 minutes per hour.

  • FormatStandard battery format
  • ConstantApproximate number of hours if the pump runs constantly
  • 30 min/hApproximate number of hours if the pump runs for 30 minutes an hour
  • 15 min/hApproximate number of hours if the pump runs for 15 minutes an hour

Scroll to view

Format Constant 30 min/h 15 min/h

Emergency pump 12 V 2000 GPH

24 5-6 h 11-12 h 23-24 h
27 6-7 h 13-14 h 28-29 h
31 7-8 h 15-16 h 31-32 h

Emergency pump 12V 4000 GPH

24 1.5-2.5 h 4-5 h 8.5-9.5 h
27 2-3 h 4.5-5.5 h 10.5-11.5 h
31 2-3 h 5.5-6.5 h 12-13 h
4D 5-6 h 11.5-12.5 h 24-25 h
8D 7-8 h 15-16 h 31-32 h

Inverter/charger ½ hp and less

2x 2GC 1.5-2.5 h 3.5-4.5 h 8.5-9.5 h
2x L16 3-4 h 7-8.5 h 16-17 h

Inverter/charger ¾ hp

2x 2GC 1.5-2.5 h 2-3 h 5.5-6.5 h
2x L16 2-3 h 4.5-5.5 h 10-11 h

Differences between different types of batteries

Bolt-H

Technology: regular lead-acid

  • Value for money
  • Requires a ventilated area
  • Reliable
  • Watering maintenance not required

Maximum lifespan : 4 years*

Bolt-H AGM

Technology: AGM

  • Watering maintenance not required
  • Better discharge
  • Very low hydrogen emissions
  • Can be installed in a confined area
  • Safer
  • More reliable

Maximum lifespan : 5-7 years*

Enerwatt WPHR

Technology: AGM

  • Watering maintenance not required
  • Better discharge
  • Very low hydrogen emissions
  • Can be installed in a confined area
  • Safer
  • More reliable

Maximum lifespan : 5-7 years*

Bolt 99

Technology: Pure lead AGM

  • Watering maintenance not required
  • Very low hydrogen emissions
  • Can be installed in a confined area
  • Safer
  • Fast charging
  • Really reliable and durable

Maximum lifespan : 8-10 years*

Other factors to consider when you purchase a battery:

Where is your pump located?

Traditional lead-acid batteries generate hydrogen, which is an explosive gas. Since pumps tend to be installed in confined, poorly ventilated areas (e.g. under the stairs), we recommend you opt for an AGM battery because they emit much less hydrogen. If your pump is in a well-ventilated area, you don’t need to worry about this.

With or without watering maintenance?

The liquid inside batteries requiring watering maintenance evaporates when the battery is used. You therefore have to check the level of liquid once a month and add distilled water, if necessary, to ensure the battery performs as it should.

When it comes to emergency backup systems, we recommend batteries that don’t require watering maintenance.

Looking for total peace of mind?

In certain situations, not having electricity can cause serious problems. If this is the case, we recommend BOLT99 batteries. They’re known for their longevity and don’t require any watering maintenance.

Need your batteries to last longer?

Did you know that you can combine the power of several batteries together to make them last longer? It’s particularly useful to do this if you have an inverter/charger system.

Do you have any children?

If your pump is in an area that your children can access, we recommend you choose an AGM battery. AGM technology is safer as you don’t need to worry about acid spills.

Make your batteries last as long as possible:

It’s important to only discharge a regular lead-acid battery down to 50% of its capacity. Otherwise, the number of cycles and the durability of the battery may be impacted.

Fun fact: AGM99 and lithium LiFePo4 batteries have an impressive lifespan, even if you discharge them down to 80% of their capacity.

How to charge your battery like a pro:

A conventional battery can take on between 10 and 15% of its capacity (Ah) in charging power (10-15 Amps to charge a 100Ah battery). Batteries that are designed using the latest technology (BOLT99 – between 10 and 30% and lithium LiFePo4 – between 5 and 50%) can be recharged faster with more powerful chargers. Fast charging can be really useful if you recharge your batteries with a generator or if the electricity only comes back on for a short while.

Installing your system:

Please note that installation fees aren’t included and, depending on your set-up, you may need to get help from an electrician and/or a plumber.

We also suggest that you install your devices at least one foot above the ground to avoid them coming into contact with water in extreme flooding situations. Nature can be unpredictable after all!

And there you have it! To learn more about sump pump systems, get in touch with our experts at your local Batteries Expert store. We’ll be happy to help you keep your house safe.

For more information

visit your nearest Batteries Expert store.

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