Choosing a battery: brands, warranties and expansion Help Centre / Category Choosing a battery: brands, warranties and expansion How to compare batteries, warranties and future upgrades. Modular vs all-in-one systems Can you add modular batteries to a Tesla Powerwall system?→ Expanding an existing battery I have a Powerwall 2. Can I add more storage?→ Does the Expansion Pack increase power?→ Is it better to add an Expansion Pack or another Powerwall 3?→ Three-phase homes Are modular batteries better for three-phase homes?→ Battery warranties and what they cover What is the Tesla Powerwall 3 warranty?→ Does Powerwall 3 have a throughput limit?→ Is a 15-year battery warranty better?→ Will joining a VPP void the warranty?→ Degradation and battery life How long does the Tesla Powerwall 3 last?→ How can I protect against degradation?→
