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Parts for your 2011 Toyota Avensis-Batteries
Narva Battery Master / Isolation Switch Plastic With Removable Key (Contacts Rated 100A at 12V) - 61038BL
$42
Narva Rotary Battery Master / Isolator Switch With Removeable Keyed Knob (Contacts Rated 100A @ 12V) - 61036BL
$52
Narva Battery Master / Isolation Switch Plastic With Removable Key (Contacts Rated 100A at 12V) - 61038
$38
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
Narva Battery Master / Isolation Switch Lever Type With Indexing Post (Contacts Rated 180A @ 12V) - 61074
$148
Narva Dual Pole Battery Master / Isolation Switch Lever Type With Lockout (Contacts Rated 250A @ 12V) - 61066
$633
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2011 Toyota Avensis batteries: what they do and how to look after them
The 2011 Toyota Avensis absolutely uses a 12‑volt battery. Technical references such as the Toyota Avensis T27 Owner’s Manual and Toyota Europe service literature for Stop & Start models, along with mainstream battery application guides from Century/Yuasa, all specify a conventional 12V lead‑acid battery in the engine bay, with AGM or EFB types required on Stop & Start variants. So yes—batteries are very much relevant on this model.
In the Avensis, the battery’s job is to crank the engine, power lights, instruments, the ECU, security system and accessories, and stabilise voltage when loads spike. On Stop & Start models, a heavier‑duty AGM/EFB battery copes with frequent restarts and deeper cycling without carking it early.
As part of routine servicing, it’s smart to check the battery’s state of health annually—especially before winter or big holiday trips. A healthy resting voltage sits around 12.6–12.8V, and you want 13.8–14.7V with the engine running to show the alternator’s doing its bit. Keep terminals clean and tight
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