DC to DC Battery Charger, 520W, 40A Alternator Charger, Fast DC-DC Charging for Portable Power Stations, Compatible with LiFePO4 Lead-Acid AGM GEL Batteries, for RVs, Cars, Home Backup Power
Not satisfied? Return it within 14 days for a full product refund. Return shipping applies for change-of-mind returns. View policy
Charge your auxiliary battery up to 5 times faster than traditional methods, keeping your RV, camper or off-grid system powered reliably. Works with almost any battery type and portable power station, so you're covered whether you're upgrading your setup or working with existing equipment. Built-in safety features and reverse charging capability mean you can get back on the road quickly without waiting for roadside help.
- 40A, 520W output with 94% charging efficiency for fast battery restoration
- Compatible with LiFePO4, Lead Acid, GEL, AGM and Calcium batteries plus 95% of portable power stations
- Supports four charging modes: 12V to 12V, 12V to 24V, 24V to 12V, 24V to 24V
- Reverse charging from auxiliary battery if starter battery runs low
- DIP switch selection for quick battery type configuration
- Overvoltage, undervoltage, reverse polarity, over-temperature and short circuit protection
- Built-in cooling fan for reliable operation in high temperatures
📦 Shipping & Delivery
Free Shipping on orders $500+. For orders under $500, a flat postage fee applies based on order weight (from $4.95).
Orders are dispatched within 1–3 business days of payment confirmation. You will receive a tracking email once dispatched.
Standard delivery: 3–7 business days (metro). Regional/WA/NT may take slightly longer.
🔁 Returns & Refunds
We offer 14-day returns on all items.
To be eligible, items must be returned in original, unused condition with all original packaging.
To start a return: email hello@myhappygift.com.au with your order number.
Refunds are processed within 5–10 business days of receiving the returned item.
🛡️ Warranty
All products include a 12-month manufacturer's warranty.
Covers manufacturing defects and faults under normal use conditions.
Does not cover accidental damage, misuse, or normal wear and tear.
To make a warranty claim, email hello@myhappygift.com.au with your order number and photos of the fault.
❓ FAQs
How long does delivery take?
Orders dispatch in 1–3 business days. Standard delivery 3–7 business days.
Do you ship to all Australian states?
Yes, we ship Australia wide including WA, NT, and all regional areas.
How do I track my order?
A tracking link is emailed once your order is dispatched.
How do I contact support?
Email hello@myhappygift.com.au or call (03) 9961 6069.
Mon–Sat, 9:00 AM – 10:00 PM AEST. We respond within 24 hours.
Are your products covered by warranty?
Yes, every product includes a 12-month manufacturer's warranty.
Curated for Quality
Every product hand-selected to meet our quality standards before it reaches your home
Fast Australian Dispatch
Orders dispatched within 1–3 business days from our Australian warehouses
Responsive Local Support
Australian-based team available Mon–Sat, 9am–10pm AEST. Reply within 24 hours
Backed by Warranty
Every product includes a 12-month manufacturer's warranty — shop with confidence
