1. Why This Guide Matters
The Toyota Sienna Hybrid is the only hybrid minivan Toyota has ever produced for the North American market. From 2011 to 2020, the third-generation Sienna (chassis code XL40) shipped with a factory Ni-MH (nickel-metal hydride) hybrid battery pack rated at 245.0V. As these vehicles age into the 8–14 year window, traction battery replacement demand is accelerating — and unlike the Prius or Camry, Sienna Hybrid has a narrow aftermarket: fewer cross-compatible packs, fewer published OE cross-references, and a higher unit cost due to the pack’s 34-module architecture.
For wholesale buyers, distributors, and B2B service shops, the Sienna Hybrid represents both an opportunity (recurring revenue from a less-crowded segment) and a risk (ordering the wrong chemistry, wrong pack voltage, or a non-OE-form-factor pack returns fast). This guide consolidates what we know about the Sienna Hybrid XL40 battery — generations, chemistry, OE numbers, the realistic 2026 wholesale price band, and a 7-step buyer checklist that protects your shop from counterfeit or mis-spec’d product.
2. Sienna Hybrid Battery at a Glance (2011–2020 XL40)
| Generation | Model Years | Chemistry (OEM) | Pack Voltage | Modules / Cells | Pack Energy (approx.) | Main OE Reference |
|---|---|---|---|---|---|---|
| 3rd Gen Sienna Hybrid (XL40) | 2011–2020 | Ni-MH (OEM) | 245.0 V | 34 modules × 6 D-cells = 204 cells | ~1.9 kWh | G9200-30030 (shared with Camry XV40 platform); G9270-08020 (Sienna-specific reference) |
| Lithium-ion Drop-in Replacement (aftermarket) | 2011–2020 | LiFePO4 (Li-ion) | 245.0 V | Sealed Li-ion module assembly | Equivalent or higher usable energy | Cross-references OE# G9270-08020 |
Note: Toyota did not offer a factory Li-ion Sienna Hybrid option. The XL40 was always Ni-MH. Aftermarket LiFePO4 / lithium-ion drop-in packs exist for buyers who want the cycle-life and weight benefits of lithium chemistry on the same OEM form factor.
3. Ni-MH vs Lithium-Ion: What You’re Actually Replacing
3.1 OEM Ni-MH Pack (2011–2020 factory)
The factory battery in every 2011–2020 Toyota Sienna Hybrid (XL40) is a Ni-MH pack built from 34 modules, each module containing six 1.2V D-size Ni-MH cells in series. Nominal pack voltage is 245.0V, total cell count is 204, and pack energy is roughly 1.9 kWh. Ni-MH is forgiving: it tolerates partial state-of-charge operation, overcharge events are rare thanks to the Toyota hybrid ECU, and the chemistry is thermally stable from −30 °C to +60 °C. For tropical climates (Middle East, Southeast Asia, sub-Saharan Africa) and cold-climate markets (Northern Europe, Canada), the Ni-MH pack remains the OE-equivalent baseline.
3.2 Aftermarket Li-ion (LiFePO4) Drop-in Replacement
For buyers who want a longer-cycle, lower-self-discharge, lighter-weight alternative to the factory Ni-MH pack, aftermarket LiFePO4 lithium-ion drop-in replacements are now available for the Sienna Hybrid XL40. The drop-in pack uses the same form factor (245.0V pack voltage), the same OEM connectors (no harness modification), and an integrated Battery Management System (BMS) that handles overcharge, overdischarge, short-circuit, and temperature protection. Typical benefits reported by distributors carrying LiFePO4 drop-in packs:
- Cycle life ~2× Ni-MH: 3000+ deep cycles vs ~1500 cycles for the factory Ni-MH
- Weight reduction ~30%: roughly 11–13 kg lighter than the equivalent Ni-MH pack
- Lower self-discharge: <3% per month vs ~20% per month for Ni-MH (vehicle can sit longer between drives)
- No memory effect: can be charged at any state-of-charge without capacity loss
- Wider operating temperature range: reliable from −30 °C to +60 °C with integrated thermal management
For full specifications, voltage ratings, and OE cross-reference (G9270-08020) on the Sienna Hybrid XL40 lithium-ion drop-in pack, see our Toyota Sienna Hybrid 2011–2020 Li-ion Battery Pack 245V product page.
4. OE Numbers and Cross-Reference
The Toyota Sienna Hybrid XL40 traction battery is commonly cross-referenced under the following OE part numbers. Always verify against your customer’s VIN before quoting:
| OE Part Number | Typical Application | Chemistry | Notes |
|---|---|---|---|
| G9200-30030 | Toyota Camry XV40 / XV50 hybrid (2007–2017) — shared platform with Sienna XL40 | Ni-MH | Most common cross-reference for 245V Ni-MH packs |
| G9270-08020 | Toyota Sienna Hybrid XL40 (2011–2020) specific | Ni-MH (OEM), Li-ion (aftermarket drop-in) | Verify with VIN |
| G9510-48010 / G9510-48070 | Higher-voltage Ni-MH packs (NOT a direct cross — different pack voltage) | Ni-MH | Do NOT substitute |
Important: the Sienna Hybrid XL40 uses a 245.0V pack. Do NOT substitute 201.6V Prius packs, 288V Highlander packs, or 144V Prius C packs. Voltage mismatch will damage the hybrid ECU and is a safety risk. For B2B buyers, this is the single most expensive sourcing error in the Sienna segment.
5. 2026 Wholesale Price Band
As of Q3 2026, realistic wholesale pricing for the Sienna Hybrid XL40 battery replacement segment (FOB Shenzhen, MOQ 10 units, inclusive of BMS and connectors):
- Factory Ni-MH OE-equivalent pack (245V, 34 modules): USD 1,800–2,400 per unit, depending on cell grade (6.5Ah vs 7.2Ah D-cells) and BMS integration.
- Lithium-ion (LiFePO4) drop-in replacement pack (245V, with integrated BMS): USD 2,400–3,200 per unit, depending on cycle-life rating, BMS feature set, and connector type.
- Ni-MH module-level replacement (7.2V module, 6 D-cells): USD 55–80 per module (typically replaced in matched sets of 34).
- Lead time: 25–35 days for Ni-MH; 30–45 days for LiFePO4 drop-in packs (custom branding adds 10–15 days).
These price bands assume direct factory supply. Distributors and OEM integration programs can negotiate tier-2 pricing for orders ≥100 units. CIF pricing to destination ports (Los Angeles, Rotterdam, Sydney) adds USD 80–180 per unit depending on container consolidation.
6. 7-Step Buyer Checklist for Sienna Hybrid Battery Sourcing
- Confirm the chassis code is XL40. The 2011–2020 Sienna Hybrid is XL40. Earlier Sienna generations (XL20, XL30) are not hybrid. Do not substitute.
- Confirm pack voltage is 245.0V. Cross-check with the customer’s VIN and the factory ECU readout. Do NOT accept 201.6V, 288V, or 144V as substitutes.
- Match the chemistry decision to the customer’s climate and duty cycle. Ni-MH remains the OE-equivalent baseline and is more forgiving in extreme climates. LiFePO4 is the upgrade recommendation for cycle-life and weight reduction.
- Verify the BMS feature set. LiFePO4 drop-in packs require integrated BMS with cell-level voltage balancing, temperature cutoff, and short-circuit protection. Confirm these are present and documented.
- Request the OE cross-reference in writing. The supplier should explicitly state which OE numbers (G9200-30030, G9270-08020, etc.) the pack is built to match, and the verification process for VIN-level matching.
- Order a pre-production sample before bulk. For orders ≥50 units, insist on a pre-production sample (2–4 units) that you bench-test against a known-good Sienna Hybrid XL40 donor vehicle before releasing the balance of the order.
- Document lead time and warranty in the PO. Lead times of 30–45 days are normal for custom-branded or custom-BMS configurations. Warranty terms should explicitly cover cell defects (typically 24–36 months) and BMS failures (typically 12–24 months).
7. Common Pitfalls (B2B Liability Traps)
Three failure modes seen most often in the Sienna Hybrid XL40 segment:
- Wrong voltage substitution: a 201.6V Prius pack or 288V Highlander pack is offered as “compatible with Sienna Hybrid.” It will not be. The ECU will reject the pack on first start, and the customer will return it at your shipping cost.
- Wrong cell count claim: the Sienna Hybrid XL40 uses 204 cells (34 modules × 6 D-cells). Marketing copy that claims “168 cells, same as Prius” is incorrect and creates B2B liability exposure.
- Non-OEM form factor: aftermarket packs that require harness modification or ECU reprogramming are not drop-in. They create installation liability for your customer.
8. Internal Resources
- Toyota Sienna Hybrid 2011–2020 Li-ion Battery Pack 245V product page — full specifications, OE cross-reference, wholesale inquiry form
- Toyota Camry Hybrid XV40 (2007–2011) Li-ion Battery Pack 244.8V product page — shared 245V platform reference
- Toyota Camry Hybrid XV50 (2011–2017) Li-ion Battery Pack 244.8V product page — successor Camry platform
- Toyota Prius Hybrid Battery Replacement Guide (1997–2026) — chemistry comparison context
- Toyota Camry Hybrid Battery Replacement Guide (2007–2026) — 245V Camry XV40/XV50 details
For wholesale inquiries (orders ≥10 units), contact our sales team with your customer’s VIN and the target chemistry (Ni-MH OE-equivalent or LiFePO4 drop-in upgrade). Lead time and CIF pricing on request.