Your Selected Vehicle
Parts for your 2021 Lexus Is-Batteries
Explore 4WD & Adventure
Narva Automotive/Marine Battery Master / Isolation Switch (Contacts Rated 300A @ 12V) - 61044BL
$102
Narva Rotary Battery Master / Isolator Switch With Removeable Keyed Knob (Contacts Rated 100A 12V) - 61036
$55
Narva 4 Position Rotary Battery Master / Isolation Switch (Contacts Rated 300A @ 12V) - 61084BL
$113
Narva Heavy Duty Battery Master / Isolation Switch with Removable Key (Contacts Rated 250A @ 12V) - 61050
$165
Narva Battery Master / Isolation Switch Lever Type With Lockout (Contacts Rated 250A @ 12V) - 61064
$458
Product added to cart
2021 Lexus IS batteries — what they do and how to look after them
Based on Lexus technical references — including the 2021 Lexus IS Owner’s Manual, Lexus IS300h New Car Features and Repair Manual, and the Lexus Service and Warranty guides for AU/NZ — batteries are absolutely relevant to the 2021 Lexus IS range. Every model uses a 12‑volt auxiliary battery, and the IS300h hybrid additionally carries a high‑voltage traction battery for propulsion and regenerative braking.
In everyday driving, the 12‑volt unit powers the computers, lighting, infotainment, locks and, on non‑hybrid IS models, cranks the engine. In the IS300h, the 12‑volt battery “wakes up” the hybrid system and closes the high‑voltage relays
Popular Searches
