Battery, Solar & Off-Grid Experts in Eugene, OR
We don't just sell it — we install it. Car, marine, motorcycle, golf-cart, and commercial batteries. Lithium and lead-acid. Solar panels, inverters, charge controllers, and every component in between. Free battery and alternator testing, custom cable builds, and full installation for RVs, boats, cabins, and fleets — plus hands-on help if you're building your own off-grid system from the ground up.
What We Carry
Over 40 lead-acid group sizes in stock, lithium for every need, commercial and industrial batteries, and solar equipment to keep your life charged — and if it's not on the shelf, we can special-order almost anything.
We can special-order Trojan, Lifeline, and Crown batteries too.
Automotive Batteries
Cars, trucks, motorcycles, golf carts, and heavy equipment. Top-tier maintenance-free batteries in 40+ group sizes.
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RV & Marine
Deep-cycle and lithium batteries for RV renovations, van conversions, bus builds, trailers, boats, and off-grid boondocking. Drop-in lithium conversions available.
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Lithium Batteries
LiFePO4 and Li-ion from 12V to 48V. Custom builds from portable packs to whole-home Powerwalls. New and used options.
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Solar Panels
New and used solar panels, charge controllers, inverters, and complete off-grid systems. Solar classes available — beginner to advanced.
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Charge Controllers
MPPT charge controllers from Victron, Epever, and MidNite — 10A to 100A for every system size.
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Inverters
12V, 24V, and 48V pure sine wave inverters and inverter/chargers — Renogy, Magnum, Outback, SMA Sunny Island, and Schneider Conext XW.
See inverter lineup
Commercial Batteries
GC-2, 31 Stud, 31 Post, 4D, 4DLT, and 8D batteries for forklifts, scissor lifts, pallet jacks, bulldozers, snow plows, and fleet equipment.
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System Components
MPPT controllers, inverters, chargers, shunts, fuse panels, wiring, and mounting hardware for complete off-grid and mobile power systems.
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Golf Cart Batteries
6V, 8V, and 12V flooded and lithium golf cart batteries. Trojan-style replacements and custom lithium conversions for extended range.
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Motorcycle Batteries
AGM and lithium batteries for motorcycles, ATVs, dirt bikes, scooters, and powersports. Most sizes in stock and ready same day.
See optionsFree Battery & Alternator Testing
Walk in during business hours. We'll test your battery and alternator at no charge — and if your battery needs replacing, we can install a new one for you right on the spot.
DIY Off-Grid Energy Systems
Build your own off-grid solar or power system with our help. Custom setups for DIY off-grid projects, RV conversions, van life, home backup. Inverters, charge controllers, micro-hydro, wind, and custom cables — we guide and build it with you.
Battery Recycling
Over 95% of lead batteries are fully recyclable. Bring us your old batteries — we'll make sure they're recycled the right way.
Our Services
Beyond the shelf — testing, custom installation, and support for whatever you're powering.
Battery Installation & Testing
Free battery and alternator testing. Most car installations $15. Walk-ins welcome.
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RV & Off-Grid Installations
Full battery and solar installs for RVs, trailers, homes, small cabins, yurts, and mobile setups.
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Custom Cables
Any size, any length — copper cables built in-house from 6AWG to 2/0AWG with marine-grade heat shrink.
Learn more Lithium Rentals
Try lithium before you buy, or rent for an event — 12V and 24V packs with Bluetooth BMS.
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Battery Recycling
Over 95% of lead batteries are fully recyclable. We pay for extras beyond core credit.
Learn moreAre You a DIY Person? Let's Build Your Off-Grid Solution
Renovating a van? Converting a bus? Installing solar on your RV or home? Bring your vehicle, power goals, or parts list and we'll work through your DIY off-grid project together.
Mac's Builds
Real off-grid systems we've put together — lead and lithium — photos and component lists from actual builds.
12V Off-Grid Starter Build
A reference board we use to walk customers through what a complete 12V off-grid system looks like — inverter, DC-DC charger, MPPT controller, bus bars, fuse block, and disconnect, all wired together.
RV Whole-Coach 3000W Build
A 12V RV build sized to run the entire coach — a 3000W Renogy inverter, a 900Ah LiFePO4 bank across three 300Ah batteries, a 100A charging system, dual AC transfer boxes, distribution bars, and heavy Temco cable throughout.
DIY Portable Packout
A compact, portable 12V power pack built by one of our DIY customers — a 300Ah Bluetooth LiFePO4 battery, Renogy shunt and distribution bars, a 40A charge controller, and a 2000W Renogy inverter, all packed into a rugged, grab-and-go tool case.
12V Truck Bed Portable Build
A simple, portable 12V truck bed build — a 300Ah battery, a 30A LiFePO4 charger, a Renogy 40A DC-DC charger off the alternator, a fuse, and a disconnect switch, mounted on a board that sits right in the bed.
Japanese RV Upgrade
A 12V power system upgrade for a Japanese-import RV — a 300Ah Bluetooth battery, distribution bars, a safety switch, a Renogy 2000W inverter with transfer switch, a 55A LiFePO4 charger, and an AC transfer box, all fit into the coach's under-floor compartment.
VW Van Conversion
A 12V power system build for a classic Volkswagen van conversion — a 200Ah Bluetooth BMS battery, an EPEVER MPPT solar charge controller, a Renogy 20A DC-DC charger, a Renogy 1000W inverter, and a Blue Sea fuse block, all wired into the van's cabinetry.
Solar System Components
Core gear, installation hardware, and safety/protection parts for complete off-grid and mobile power systems.
Core Systems
Installation Hardware
Wondering About Lithium?
Lithium batteries last 3–5× longer than lead, weigh 1/3 as much, and offer far more usable capacity. Our 12V 100Ah and 170Ah LiFePO4 drop-in replacements for Group 24/27 come with Bluetooth BMS for easy monitoring.
- ✓ Built to last 10+ years
- ✓ Bluetooth BMS (iPhone & Android) for monitoring
- ✓ Much lighter — same charging system as lead (LiFePO4)
- ✓ Charges significantly faster than lead
- ✓ New, used/tested, off-the-shelf, and custom builds
Quick Comparison
| AGM Lead | Lithium | |
|---|---|---|
| Lifespan | 3–5 years | 12–15 years |
| Weight | Heavy | 1/3 the weight |
| Usable Capacity | ~50% | ~95% |
| Upfront Cost | Lower | Higher |
Solar Panels & Classes
We stock new and used solar panels — all used panels are fully MPPT tested. Mac's also hosts solar classes from beginner to advanced. Come learn the basics of DIY off-grid solar to power your life, your van life, your RV, or your custom project. Call and get signed up today!