Identify your unit first
AC / mini-split remote batteries
Mini-split remotes are not one battery. Most IR handhelds use 2× AAA; some Mitsubishi RedLINK wall controllers use 2× AA. Read the part number on the remote (ARC433, RG10, YAN1F1, MRCH…) before buying — and never treat a universal AC remote as an OEM original.
Important
If you cannot identify your exact model and the battery named on the label, we will not invent an answer. Identify the unit first.
What kind of unit do you have?
| Generation / model | Battery | Replaceable? | Notes |
|---|---|---|---|
| Daikin ARC433 series (IR) | 2 × AAA | Yes | ARC433B46/B47-class manuals: two AAA dry batteries. Confirm the ARC433 marking on your remote. |
| Mitsubishi MRCH1 / MHK1 (RedLINK) | 2 × AA | Yes | Wireless wall/kit controller — AA, not the AAA IR handheld pattern. |
| Mitsubishi MRCH2 / MHK2 (RedLINK) | 2 × AA | Yes | MHK2 kit sheet: two AA alkaline. |
| Midea RG10 series (IR) | 2 × AAA | Yes | RG10 wireless remote manual: two alkaline AAA. |
| Gree YAN1F1 family (IR) | 2 × AAA | Yes | YAN1F1 features PDF: two AAA. Universal aftermarket clones are not OEM originals. |
| Fujitsu / Panasonic / other brands | Usually 2 × AAA — confirm manual | Yes | Many Fujitsu wireless manuals specify AAA×2. Panasonic A75C-family remotes are typically AAA — upgrade only with an OEM PDF for your exact PN. |
| Universal AC / mini-split remote | Read the aftermarket tray | Yes | Universal remotes are not ORIGINAL OEM remotes. Battery type follows the universal unit’s tray — feature coverage may be basic only. |
| Unsure which remote you have | Identify first — no cell yet | No | Find the part number on the remote or the indoor unit’s manual. Brand alone is not enough. |
Matching devices
Still not working?
Only after tray-correct cells: check IR line-of-sight and that the indoor unit still accepts that remote family. Replacement is by OEM part number — not a generic “AC remote” ad.