If you’re replacing a lead-acid bank every three or four years, the ten-year math usually favours LFP. Here’s the honest comparison — including who shouldn’t switch yet — then a quote with a same-day callback.
Higher upfront, longer life, zero maintenance. Right for daily cycling and bigger banks — not always right for small, occasional backup.
As LFP prices fall, the switch makes sense for more businesses each year. But not everyone. The honest split:
✓You cycle the bank daily — LFP’s cost-per-cycle is a fraction of lead-acid.
✓You’re replacing lead-acid every 3–4 years and tired of it.
✓Space is tight or indoors — LFP is compact and fume-free.
✓You want zero maintenance: no water top-ups, no ventilation fuss.
Your backup is small and you use it only during occasional cuts.
Your current lead-acid bank is healthy and recently bought.
Upfront budget is the hard constraint this cycle — lead-acid buys time.
The lead-acid guide ›This is the question that stalls most switches. Here it is without the jargon.
Purpose-built for LFP — correct charge profile and communication with the battery’s BMS. Plug-and-play in most cases; the ideal pairing.
Many ordinary inverters run LFP fine if the voltage and charging suit it. Some settings may need adjusting; a few won’t cut it. This is what the photo check settles.
Manages grid, storage, and solar as one system with clean switchover — the future-proof choice if you’re also thinking about solar later.
Lithium iron-phosphate (LFP) is the most thermally stable mainstream lithium chemistry — a different beast from the phone and EV cells behind the scary stories. Paired with a proper battery-management system, it runs cool, vents nothing, and sits safely in a closed indoor cabinet.
The chooser weighs your backup need, priorities, and space — and will tell you honestly when lead-acid still beats LFP for your case. Free, no sign-up.
Open the full tool ›Photo of your inverter + your load; we confirm compatibility and size.
LFP system priced individually, with your old-bank buy-back credited in.
We remove the old bank, install the LFP + BMS, and set the charge profile.
You see it working, know the settings, and we take the old batteries away.
Your existing batteries have scrap and core value. We assess them, set that credit against your LFP system, and handle responsible disposal — so the switch costs less than the sticker suggests.
Pick “Lithium” as the chemistry to see the category-level bank and inverter class for your load and backup hours — a sensible starting point before the quote.
Open the full tool ›You’ve got a motor/AC load. Lead-acid loses usable capacity at high draw, and the inverter must handle the start surge. Lithium (LFP) holds its rating ›
Category-level only — no brand or model. We confirm the exact string, wiring, and placement on quote.
Indicative — confirmed on assessment.
A few details is all we need. We’ll quote the LFP system, check your inverter compatibility, and lay the lithium and lead-acid numbers side by side — no upsell.
Sometimes as-is, sometimes not. A lithium-ready or hybrid inverter is ideal; many ordinary inverters can run LFP within limits, and a few need replacing. Send us a photo of your inverter’s label and we’ll tell you in minutes.
Not on day one — it costs more upfront. But it lasts 8–12 years versus 3–4 for lead-acid and needs no maintenance, so over ten years the total cost usually lands lower if you cycle daily or run a larger bank.
If your backup is small and infrequent and your current lead-acid bank is healthy, the upfront premium may not pay back. We’ll tell you honestly when lead-acid is still the smarter buy.
LFP is the safest mainstream lithium chemistry — thermally stable, no fumes, and fine in a closed indoor cabinet with a proper BMS.
Yes. We value your old bank fairly, credit it against the lithium upgrade, and handle responsible disposal — no separate scrap-dealer hassle.
No — an LFP system is sized to your load, runtime, and inverter compatibility. Share your setup and we quote individually, usually with a same-day callback.