CSB XTV1285F2-WT 12V 8.5Ah wind turbine battery, replaced by the XTV1272F2FR-WT, F2 tab
CSB XTV1285F2-WT 12V 8.5Ah wind turbine battery, replaced by the XTV1272F2FR-WT, F2 tab

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CSB XTV 1285F2-WT EXTREME TEMPERATURE Wind Turbine Battery

$34.95
SKU: XTV1285F2-WT
Availability: Request Quote For Availability
Minimum Purchase: 10 units
Shipping: Free shipping on orders $75 and up
Voltage: 12
Capacity: 8.5 Ah class, no longer listed by CSB; WT replacement XTV1272F2FR-WT 7.2 Ah nominal, standard XTV1285F2 8.80 Ah
Chemistry: AGM VRLA, pure lead construction
Terminal: F2 Faston tab 0.250 in
Features: Not listed by CSB; replaced by XTV1272F2FR-WT (wind turbine build) or XTV1285F2 (capacity match), both 3-year CSB parts
Dimensions: 5.94 x 2.55 x 3.88 in (L x W x H), shared by both replacement parts
Design Life: Up to 12 years standby at 25C (replacement parts' datasheets)
Group Size: M7
CSB XTV 1285F2-WT EXTREME TEMPERATURE Wind Turbine Battery

CSB XTV 1285F2-WT EXTREME TEMPERATURE Wind Turbine Battery

$34.95
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Description  
CSB no longer lists the XTV1285F2-WT. The same-case WT part is the XTV1272F2FR-WT, and the capacity match is the standard XTV1285F2. Orders on this number are quoted on one of those two.

CSB XTV1285F2-WT Battery - 12V 8.5Ah Wind Turbine AGM, Replaced

If you have a pack of XTV1285F2-WT blocks in a hub, this page tells you what to order and what changes. CSB's current wind turbine range has no 8.5 amp hour position: the 2026 price list and the WT datasheets run 5, 7.2, 12 and 20 Ah, and the 8.5 sits between two of them. The like-for-like choice is the XTV1272F2FR-WT, which keeps the 5.94 by 2.55 by 3.88 inch case, the F2 tab, the -20°C to 50°C envelope and the WT build for vibration and cycling, and gives up capacity: 7.2 Ah nominal, 7.40 Ah on the datasheet's 20 hour table, against the 8.5 this part number was sold on. The other choice keeps the capacity and gives up the WT build: the standard XTV1285F2, 8.80 Ah on its 2026 sheet in the same case and on the same F2 tab, built for float service in a stationary cabinet. Which one is right depends on whether the pack is in a rotating hub or on the ground, and a specialist settles that on the quote. Both are 3 year CSB parts built in Vietnam.

Warranty

Warranty. Both replacement paths carry the same CSB term, 3 years, and both are built in Vietnam. Design life on the CSB sheets is a separate figure: up to 12 years in standby service at 25°C (77°F). Terms are confirmed in writing with your quote.

Two Ways to Replace It

Keep the WT build
XTV1272F2FR-WT. Same case and tab, wind turbine construction, 7.2 Ah nominal. Pack capacity drops by about 15 percent on the nominal figures.
Keep the capacity
Standard XTV1285F2. Same case and tab, 8.80 Ah measured, built for stationary float service rather than a rotating hub.
Either way, the tray fits
All three parts share 150.9 by 64.8 by 98.6 mm and a 0.250 inch F2 Faston tab, so the hardware does not change.
  • Replace the string as a set - a pitch pack is a series string, and a new block in series with aged ones is limited by the weakest of them. Quote the full count per hub, not the one that failed.
  • Check the runtime as well as the fit - if the pitch drive specification was written around 8.5 Ah per block, the 7.2 Ah WT part needs the drive maker's sign-off. Send the pitch system model with the request.
  • Old literature says gel - CSB's earlier XTV sheets used the phrase "hybrid gel". The current sheets for both replacement parts describe AGM construction with pure lead, charged on the 13.5 to 13.8 volt float window.
  • Charge and discharge to -20°C - on both paths. Storage is rated -15°C to 40°C on the WT sheet and -20°C to 40°C on the standard XTV sheet.

Technical Specifications

CSB XTV1272F2FR-WT Specifications (the WT replacement for the XTV1285F2-WT)
ReplacesXTV1285F2-WT (also written XTV 1285F2-WT, XTV1285 WT, XTV-1285F2-WT and xtv1285f2-wt), no longer listed by CSB
Replacement Part NumberXTV1272F2FR-WT (WT build); standard XTV1285F2 where the WT build is not required
SeriesXTV-WT, Extreme Temperature, wind turbine, 12 volt top terminal
Battery TypeAGM, valve regulated lead acid (VRLA), pure lead construction
Nominal Voltage12V
Capacity, 20 Hour Rate7.2 Ah nominal; 7.40 Ah on the datasheet capacity table, to 1.75 VPC at 25°C
Capacity, 8 Hour Rate6.72 Ah to 1.75 VPC; 6.56 Ah to 1.80 VPC
Watts Per Battery, 15 Minutes148 W to 1.67 VPC; 145 W to 1.75 VPC at 25°C (CSB XTV-WT tables, RA240531)
Maximum Charge Current2.16 A
Maximum Discharge Current130 A
Short Circuit Current305 A
Internal ResistanceApproximately 20.40 milliohms
Terminal TypeF2 Faston tab, 0.250 inch, the same tab as the XTV1285F2-WT
Length5.94 ± 0.08 inches (150.9 ± 2.0 mm)
Width2.55 ± 0.04 inches (64.8 ± 1.0 mm)
Height3.88 ± 0.04 inches (98.6 ± 1.0 mm)
Weight5.66 lbs (2.57 kg); the standard XTV1285F2 is 5.77 lbs
BCI Group SizeM7 (CSB price list)
Float Charging Voltage13.5 to 13.8 VDC per battery at 25°C (77°F)
Equalization Charging Voltage14.4 to 15.0 VDC per battery at 25°C (77°F)
Operating TemperatureDischarge and charge -20°C to 50°C (-4°F to 122°F); storage -15°C to 40°C (5°F to 104°F)
Container MaterialABS, flame retardant to UL 94-V0, standard on the WT build
StandardsIEC 61056-1/2:2012; UL1989 Recognized (MH14533)
Design LifeUp to 12 years in standby service at 25°C; greater than 12 years on the Eurobat 20°C basis
Warranty3 years (CSB, XTV-WT); the standard XTV1285F2 also carries 3 years
Country of OriginVietnam
Stock Status at CSBXTV1272F2FR-WT and XTV1285F2 are both stock items on the CSB price list
Technical Documentation
CSB XTV1272F2FR-WT datasheet, 2026 (PDF)CSB XTV1285F2 datasheet, 2026 (PDF)CSB XTV-WT series extended discharge tables (PDF)

Where the Old Part Was Used

  • Wind turbine pitch system packs - the blade feathering strings in the hub, where the WT replacement is the one to specify.
  • Nacelle and tower base controls - stationary equipment on a wind site, where the standard XTV1285F2 keeps the full 8.5 Ah class and the cold rating without paying for the WT build.
  • Outdoor cabinets that happened to be stocked with the WT part - traffic, telecom and monitoring enclosures; the standard XTV1285F2 is the direct fit here.

Ordering and Freight

Both replacement parts are CSB stock items packed 10 to a carton, so a hub set ships by parcel carrier in one or two cartons and a fleet order moves LTL, where a residential or limited-access delivery adds $100 for the liftgate and access charge the carrier passes through. State which path you want, or send the pitch system model and let a specialist recommend one. Pricing, lead time and freight come back in writing in 24 to 48 hours.

Frequently Asked Questions

Did CSB discontinue the XTV1285F2-WT?

It is not on CSB's current key distributor price list and it is not among the models on the current XTV-WT datasheets, which cover the 7.2, 12 and 20 Ah WT parts, with the 5 Ah part on the price list only. Whether CSB calls that discontinued or simply no longer offered, the practical position is the same: it cannot be ordered under this number, and the two parts above are what CSB builds today in this case size.

Will the 7.2 Ah WT block run my pitch system?

Only the pitch drive manufacturer can answer that, because the string capacity in the original specification was theirs. On the nominal figures the pack loses about 15 percent of its amp hours; on the datasheet tables, 7.40 against 8.80, the loss is nearer 16 percent. The 15 minute power figure moves from 183 watts per battery on the standard 1285 to 148 on the WT 1272. Some drives have that margin and some do not. Send the drive model with the request and a specialist checks before anything ships.

Can I put the standard XTV1285F2 in a hub?

Electrically it matches the old part's capacity class and the -20°C to 50°C discharge window. What it does not carry is CSB's WT build, whose published purpose is charging efficiency, high vibration operation and cycle life, and a hub is exactly the place those three things are tested. For a stationary installation the standard part is the better match. For a rotating pack, specify the WT part and accept the capacity conversation.

Can I mix the new part with the old blocks still in the pack?

Not in the same series string. A string charges and discharges as one unit, and an aged block with higher internal resistance sets the limit for the fresh ones beside it, so a partial replacement buys less runtime than the count suggests and shortens the life of the new blocks. Replace the string as a set, and if the hub carries one string per blade, replace all three on the same visit so the pitch drives see matched packs.

The WT replacement: CSB XTV1272F2FR-WT7.2 Ah, 148 watts per battery at 15 minutes, wind turbine build in the same M7 case and F2 tab. The capacity match: CSB XTV1285F28.80 Ah measured at the 20 hour rate and 183 watts per battery at 15 minutes, standard XTV float build in the same case.
Which path fits your pack?

Tell a specialist whether the batteries live in the hub or on the ground, the count per string and the pitch drive model if you have it. The recommendation and the quote come back together, in writing.

Call 1-877-775-4381  ·  battery specialists, not a call center

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov (State of California only).

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