BigBattery Promo Codes
There's a low chance you'll find a working BigBattery promo code right now. On this page you'll find all 30 codes ranked by what's worked at checkout. The best one to try is NATUREJAB5, though nothing's a sure thing.
How often BigBattery codes work
Each bar is one week of real shopper results: the greener the bar, the better the chance a code worked that week. Paler bars carry limited data.
| Discount | Last used | Performance | Promo code |
|---|---|---|---|
| Discount on your order | 3d ago | DREAMS5 | |
| 8% off Nexus & Eagle 2 + Free Shipping | — | HOLIDAY2025 | |
| 8% off sitewide | — | CYBERWEEK2025 | |
| 20% off METERHOME ESS orders | 2mo ago | MHOME20 | |
| 15% off METERHOME ESS kits | 2mo ago | MH15 | |
| 10% off NEXUS + APEX + EG4 12kPV Kits | — | OG10 | |
| 5% off | 6w ago | STONE5 | |
| 7% off sitewide this February | 2mo ago | FEBRUARY7 | |
| 10% off sitewide | — | — | SOLARHAV10 |
| $1,500 off | — | — | ETHOS4 |
| 10% off your purchase | — | — | HIGHTECH10 |
| 10% off | 1y+ ago | — | DAVE10 |
| 10% off storewide | 1y+ ago | — | KGSGARAGE10 |
| 10% off any product | — | — | GRIND10 |
| 10% off Ethos System | 1y+ ago | — | BUCKHORN10 |
| 30% off | 1y+ ago | — | GREENACREBIGBATTERY |
| $650 off 2x HUSKY 2 KITS | — | — | 2HUSKY2 |
| 10% off batteries | — | — | SPICER10 |
| 10% off | 1y+ ago | — | RVWITHTITO |
| 10% off storewide, Free Shipping | 1y+ ago | — | PARTNER10 |
| 15% off + Free Shipping | 1y+ ago | — | SUNPWR15 |
| 10% off | 1y+ ago | — | STEGE10 |
| 10% off | — | — | SOLARROLLA10 |
| 10% off | 1y+ ago | — | MRGREEN |
| 10% off | 1y+ ago | — | THANKYOU10 |
| UL Listed Inverter and Battery System - Save 50% | 1y+ ago | — | GREENACRE |
| 10% off storewide | 1y+ ago | — | TOCCI10 |
| 50% off Installation of Mustang 48v 7kWh LiFePO4 | 1y+ ago | — | CLE10 |
| 50% off Storewide | 1y+ ago | — | BIGBATTERY |
About this page
Introducing a more honest way to find coupon codes
Every code has a history, and we track it
Codes fail for boring reasons: they expire, they only cover one category, they only apply to a first order. Calling any of them "verified" would be a guess dressed up as a fact. We publish the chance instead, built from checkout data and shopper answers, and we track it over time.
Likely not workingMixed resultsHigh chance of working
You'll find one of these charts on every code we list, tracking how it has performed over time.
When there is nothing worth trying, we say so
When we don't think there is a working code for a store, we say so right at the top of the page, before you spend time scrolling.
Good chance right now78%
Nothing likely right now9%
A code that works at breakfast can be dead by lunch. Nobody can promise otherwise, so we don't stamp anything here as "working" or "verified". We tell you the chance of a code working instead, based on real shopper feedback and data, and when the chance is poor we say that out loud.
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