Tested in 110°F Arizona. Recovery-first. Every claim labeled.
The goal is keeping your system recoverable under real conditions — not just on ideal days.
The single rule: time-to-recover beats raw capacity. It shapes every recommendation on this site.
The four pillars
How CAVL evaluates power gear.
Time-to-recover
We prioritize repeatable refill windows over storage size.
- Storage matters; refill reliability decides stability
- Faster recharge often beats more Wh
- Recovery you can execute, not theoretical
Real conditions
Heat, humidity, cloud cover, seasonal sun — all are core planning inputs.
- Not lab benches. Not ideal-day testing.
- Eight years of bad-week behavior in the same black ProMaster.
Measured · Spec · Reported · Estimate
Every claim carries one of four labels. No invented numbers.
- Manufacturer claims linked to source
- Third-party tests linked too
- Field notes labeled as experience
Safety boundary
No wiring tutorials. Vehicle electrical carries real safety stakes.
- Manufacturer guidance for installs
- Qualified installer for the rest
- We stay in the planning lane
How to use this site
Use CAVL in this order.
- Figure out what's actually failing. Most upgrade regret comes from buying for a routine problem.
- Stop one leak. Inverter habits, AC defaults, background entertainment — pick one.
- Run the upgrade decision tree. Bottleneck → tier → check → buy.
- Use the buyer checklist. Don't trust spec sheets in isolation.
Go deeper (only if you need to)
How we label claims+
Every number carries one of four labels:
- Measured — tested firsthand with real numbers
- Spec — from the manufacturer, linked
- Reported — from a credible third-party source
- Estimate — modeled assumption, clearly flagged
Full breakdown: How We Test and Label Claims →
Why our picks start at 700Wh++
For full-time recommendation pages, we start at 700Wh+. That's the size where systems stop feeling fragile in real climate.
Smaller stations are valid for weekenders and light-load setups — they just sit outside the focus of these picks.
Context: What 700Wh Actually Runs →
Price drift policy+
Pricing changes often, so we use an "under now" vs "more picks" structure.
We don't promise a model will always stay under a fixed price cap.
Safety policy (high level only)+
We keep power guidance high-level and recovery-focused.
We don't publish wiring tutorials. For installs, follow manufacturer guidance or work with a qualified installer.