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Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB
Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB
Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB
Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB
Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB
Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB
Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB

Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB

$239.00

(8 reviews)

Whether you’re touring the country with the family in tow or just trying to keep your drinks icy cold between job sites, our DC-DC charger is one of the easiest ways to keep your batteries topped up without being tethered to a mains power supply. The charger can be used on a range of batteries including both 12V SLA, AGM, gel, calcium, and LiFePO4 systems. The DC-DC works by converting the power from your alternator into a charge voltage that carefully, but quickly, suits the status, and chemistry of your auxiliary battery all without affecting your vehicle’s starter battery. Designed to work on most vehicles, it’s compatible with either traditional or fixed/smart alternators and will feed up to 40A into your batteries per hour. There’s a dedicated Anderson-style plug coming from the unit for the inbuilt Maximum Power Point Tracking (MPPT) solar regulator function. The charger will use the power coming from the solar input when it detects it as either the only available power source, or if the solar input exceeds the power being produced by the vehicle. Able to regulate up to 40A, it’s able to handle solar up to 15% more efficiently than traditional Pulse Width Modulation (PWM) regulators. With a high heat tolerance, the charger can be mounted in most places including under the bonnet. This is particularly useful in vehicles that have the space for an additional battery in the engine bay, like in Landcruisers and Patrols, helping to not only reduce voltage drop but also free up some space in the back of the vehicle. The charger comes with three pre-wired Anderson-style plugs to make installation simple. The black plug connects directly to the auxiliary battery, the traditional grey plug is the dedicated solar input, whilst the three-pin Anderson plug can be used to quickly connect to the vehicle.

Whether you’re touring the country with the family in tow or just trying to keep your drinks icy cold between job sites, our DC-DC charger is one of the easiest ways to keep your batteries topped up without being tethered to a mains power supply. The charger can be used on a range of batteries including both 12V SLA, AGM, gel, calcium, and LiFePO4 systems. The DC-DC works by converting the power from your alternator into a charge voltage that carefully, but quickly, suits the status, and chemistry of your auxiliary battery all without affecting your vehicle’s starter battery. Designed to work on most vehicles, it’s compatible with either traditional or fixed/smart alternators and will feed up to 40A into your batteries per hour. There’s a dedicated Anderson-style plug coming from the unit for the inbuilt Maximum Power Point Tracking (MPPT) solar regulator function. The charger will use the power coming from the solar input when it detects it as either the only available power source, or if the solar input exceeds the power being produced by the vehicle. Able to regulate up to 40A, it’s able to handle solar up to 15% more efficiently than traditional Pulse Width Modulation (PWM) regulators. With a high heat tolerance, the charger can be mounted in most places including under the bonnet. This is particularly useful in vehicles that have the space for an additional battery in the engine bay, like in Landcruisers and Patrols, helping to not only reduce voltage drop but also free up some space in the back of the vehicle. The charger comes with three pre-wired Anderson-style plugs to make installation simple. The black plug connects directly to the auxiliary battery, the traditional grey plug is the dedicated solar input, whilst the three-pin Anderson plug can be used to quickly connect to the vehicle.

Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB

(8 reviews)

Whether you’re touring the country with the family in tow or just trying to keep your drinks icy cold between job sites, our DC-DC charger is one of the easiest ways to keep your batteries topped up without being tethered to a mains power supply. The charger can be used on a range of batteries including both 12V SLA, AGM, gel, calcium, and LiFePO4 systems. The DC-DC works by converting the power from your alternator into a charge voltage that carefully, but quickly, suits the status, and chemistry of your auxiliary battery all without affecting your vehicle’s starter battery. Designed to work on most vehicles, it’s compatible with either traditional or fixed/smart alternators and will feed up to 40A into your batteries per hour. There’s a dedicated Anderson-style plug coming from the unit for the inbuilt Maximum Power Point Tracking (MPPT) solar regulator function. The charger will use the power coming from the solar input when it detects it as either the only available power source, or if the solar input exceeds the power being produced by the vehicle. Able to regulate up to 40A, it’s able to handle solar up to 15% more efficiently than traditional Pulse Width Modulation (PWM) regulators. With a high heat tolerance, the charger can be mounted in most places including under the bonnet. This is particularly useful in vehicles that have the space for an additional battery in the engine bay, like in Landcruisers and Patrols, helping to not only reduce voltage drop but also free up some space in the back of the vehicle. The charger comes with three pre-wired Anderson-style plugs to make installation simple. The black plug connects directly to the auxiliary battery, the traditional grey plug is the dedicated solar input, whilst the three-pin Anderson plug can be used to quickly connect to the vehicle.

Whether you’re touring the country with the family in tow or just trying to keep your drinks icy cold between job sites, our DC-DC charger is one of the easiest ways to keep your batteries topped up without being tethered to a mains power supply. The charger can be used on a range of batteries including both 12V SLA, AGM, gel, calcium, and LiFePO4 systems. The DC-DC works by converting the power from your alternator into a charge voltage that carefully, but quickly, suits the status, and chemistry of your auxiliary battery all without affecting your vehicle’s starter battery. Designed to work on most vehicles, it’s compatible with either traditional or fixed/smart alternators and will feed up to 40A into your batteries per hour. There’s a dedicated Anderson-style plug coming from the unit for the inbuilt Maximum Power Point Tracking (MPPT) solar regulator function. The charger will use the power coming from the solar input when it detects it as either the only available power source, or if the solar input exceeds the power being produced by the vehicle. Able to regulate up to 40A, it’s able to handle solar up to 15% more efficiently than traditional Pulse Width Modulation (PWM) regulators. With a high heat tolerance, the charger can be mounted in most places including under the bonnet. This is particularly useful in vehicles that have the space for an additional battery in the engine bay, like in Landcruisers and Patrols, helping to not only reduce voltage drop but also free up some space in the back of the vehicle. The charger comes with three pre-wired Anderson-style plugs to make installation simple. The black plug connects directly to the auxiliary battery, the traditional grey plug is the dedicated solar input, whilst the three-pin Anderson plug can be used to quickly connect to the vehicle.

$239.00 - $495.00

in 16 offers

The lowest price for Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet with MPPT Solar Regulator HKPDCDC40UB right now is $239.00 at eBay.com.au, compared across 14 retailers.

The all-time low was $149.00 on 19 Mar 2026 — today's price is 60% above the lowest ever. It has been notably cheaper before — worth setting a price alert.

Prices last updated 27 June 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 27/06/2026 22:40:02

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Amazon.com.au

$469.00

HardKorr HKPDCDC40UB Under Bonnet 40A DC-DC Battery Charger with MPPT Solar Regulator

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$239.00

Hardkorr - 40a Dc-dc Charger Waterproof/under Bonnet - Hkpdcdc40ub -

Delivery $18.50

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$369.73

Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$469.00

Hardkorr Hkpdcdc40ub Under Bonnet 40a Dc-dc Battery Charger With Mppt

Delivery $9

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

BCF

$349.99

Hardkorr 40A Waterproof DC-DC Charger

Free delivery between Tue – Fri

Cash Converters

$379.00

Hardkorr Black Battery Charger

Delivery $20

altapac.com

$446.00

HARDKORR 40A DC-DC UNDER BONNET CHARGER

Free delivery between 1–7 July

Rugged Outdoors

$446.00

HARDKORR 40A DC-DC UNDER BONNET CHARGER

Free delivery between 1–7 July

Snowys Outdoors

$449.00

Hardkorr 40A DC−DC Under Bonnet Battery Charger with MPPT Solar Regula

Free delivery between Tue – Fri

Supercheap Auto AU

$469.00

Hardkorr 40A Waterproof DC-DC Charger

Free delivery between Tue – Fri

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Specification

VEHICLE INPUT VOLTAGE9-32V
SOLAR INPUT VOLTAGE10-32V
MAX. INPUT CURRENT47A
MAX. OUTPUT CURRENT40A
INPUT/OUTPUT FUSE RATING60A

Price comparison

Updated 6 days ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Amazon.com.au

$469.00

HardKorr HKPDCDC40UB Under Bonnet 40A DC-DC Battery Charger with MPPT Solar Regulator

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$239.00

Hardkorr - 40a Dc-dc Charger Waterproof/under Bonnet - Hkpdcdc40ub -

Delivery $18.50

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$369.73

Hardkorr 40A DC-DC Charger Waterproof/Under Bonnet

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$469.00

Hardkorr Hkpdcdc40ub Under Bonnet 40a Dc-dc Battery Charger With Mppt

Delivery $9

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

BCF

$349.99

Hardkorr 40A Waterproof DC-DC Charger

Free delivery between Tue – Fri

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Specification

VEHICLE INPUT VOLTAGE9-32V
SOLAR INPUT VOLTAGE10-32V
MAX. INPUT CURRENT47A
MAX. OUTPUT CURRENT40A
INPUT/OUTPUT FUSE RATING60A

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