Arctic-Cat Alterra Battery
The Arctic-Cat Alterra (300cc) takes a YTX20H-BS battery, about 310 CCA and 18 Ah. It is a sealed agm (maintenance-free), and a lithium drop-in fits the same case.
Key takeaways
- Battery: YTX20H-BS.
- Sealed AGM (maintenance-free), around 310 CCA, 18 Ah.
- Lithium drop-in fits the same YTX20H-BS case - lighter, longer-lived, needs a lithium charger.
- Covers 2016-2024 (battery changed across years - see table).
- Chemistry (OEM)
- Sealed AGM (maintenance-free)
- Cold cranking amps (CCA)
- 310
- Capacity
- 18 Ah
- Engine
- 300cc
- Fits model years
- 2024
The -BS suffix means it ships dry with an acid pack you add once - after that it is a sealed, maintenance-free AGM battery.
The Arctic-Cat Alterra uses a YTX20H-BS - sealed agm (maintenance-free). Around 310 CCA of cold-start current. Meeting or beating the OEM rating is fine; going under it can cause hard starts in the cold. About 18 Ah of capacity - the reserve that runs lights and electronics with the engine off.
AGM is the safe like-for-like: cheapest, tolerant of standard chargers and trickle tenders, and heavier. Lithium (LiFePO4) drop-ins in the same case size cut weight by roughly 60-70%, hold voltage better, and self-discharge far slower - but they cost more and need a lithium-aware charger, not an old lead-acid trickle charger.
Buy the battery for your Arctic-Cat Alterra
AGM is the safe like-for-like: cheapest, tolerant of standard chargers and trickle tenders, and heavier. Lithium (LiFePO4) drop-ins in the same case size cut weight by roughly 60-70%, hold voltage better, and self-discharge far slower - but they cost more and need a lithium-aware charger, not an old lead-acid trickle charger.
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Arctic-Cat Alterra battery by year
| Years | Battery | CCA | Ah |
|---|---|---|---|
| 2024 | YTX20H-BS | 310 | 18 |
| 2024 | YTX20HL-BS | 310 | 18 |
| 2024 | YTX12-BS | 180 | 10 |
| 2024 | YTX20H-BS | 310 | 18 |
| 2024 | YTX20HL-BS | 310 | 18 |
| 2024 | YTX12-BS | 180 | 10 |
| 2023 | YTX20H-BS | 310 | 18 |
| 2023 | YTX20HL-BS | 310 | 18 |
| 2023 | YTX12-BS | 180 | 10 |
| 2023 | YTX20H-BS | 310 | 18 |
| 2023 | YTX20HL-BS | 310 | 18 |
| 2023 | YTX12-BS | 180 | 10 |
| 2022 | YTX20H-BS | 310 | 18 |
| 2022 | YTX20HL-BS | 310 | 18 |
| 2022 | YTX12-BS | 270 | 6 |
| 2022 | YTX20H-BS | 310 | 18 |
| 2022 | YTX20HL-BS | 310 | 18 |
| 2022 | YTX12-BS | 270 | 6 |
| 2021 | YTX20H-BS | 310 | 18 |
| 2021 | YTX20HL-BS | 310 | 18 |
| 2021 | YTX12-BS | 180 | 10 |
| 2021 | YTX20H-BS | 310 | 18 |
| 2021 | YTX20HL-BS | 310 | 18 |
| 2021 | YTX12-BS | 180 | 10 |
| 2020 | YTX20H-BS | 310 | 18 |
| 2020 | YTX12-BS | 180 | 10 |
| 2020 | YTX20H-BS | 310 | 18 |
| 2020 | YTX12-BS | 180 | 10 |
| 2019 | YTX20H-BS | 310 | 18 |
| 2019 | YTX12-BS | 180 | 10 |
| 2019 | YTX20H-BS | 310 | 18 |
| 2019 | YTX12-BS | 180 | 10 |
| 2018 | YTX20H-BS | 310 | 18 |
| 2018 | YTX12-BS | 180 | 10 |
| 2017 | YTX20H-BS | 310 | 18 |
| 2017 | YTX20HL-BS | 310 | 18 |
| 2017 | YTX20H-BS | 310 | 18 |
| 2017 | YTX20HL-BS | 310 | 18 |
| 2017 | YTX12-BS | 180 | 10 |
| 2016 | YTX20H-BS | 310 | 18 |
Installing it
Disconnect the negative (-) terminal first and reconnect it last. Powersports batteries are small and light, so this is usually a 10-15 minute job with a couple of hand tools.
Frequently asked
What battery does a Arctic-Cat Alterra take?
The Arctic-Cat Alterra takes a YTX20H-BS battery, a sealed agm (maintenance-free) rated around 310 CCA and 18 Ah.
Is the YTX20H-BS an AGM or lithium battery?
Sealed AGM (maintenance-free). The -BS suffix means it ships dry with an acid pack you add once - after that it is a sealed, maintenance-free AGM battery. You can also fit a LiFePO4 lithium drop-in in the same YTX20H-BS case size for less weight and longer life - just use a lithium-aware charger.
How many cold cranking amps (CCA) does it need?
Around 310 CCA of cold-start current. Meeting or beating the OEM rating is fine; going under it can cause hard starts in the cold.
Can I put a lithium battery in a Arctic-Cat Alterra?
Yes. Lithium (LiFePO4) drop-ins are made in the same YTX20H-BS case size, so they fit the tray and terminals. They weigh far less and last longer, but need a lithium-compatible charger rather than an old lead-acid trickle charger.
How do I change the battery on a Arctic-Cat Alterra?
Disconnect the negative (-) terminal first and reconnect it last. Powersports batteries are small and light, so this is usually a 10-15 minute job with a couple of hand tools.
Other atvs that take a YTX20H-BS
See every model that uses a YTX20H-BS battery →More parts for your Arctic-Cat Alterra
We cover the other consumables for your machine too - the exact fit, cited, in one place.