You are holding a legacy GNB part number, from a module label, an old purchase order, or an asset list, and you need to know exactly what to order today. The short version: every GNB Absolyte part number has a current Stryten Absolyte AGP equivalent, because Stryten Energy (formerly GNB Industrial Power, a division of Exide Technologies) still manufactures the Absolyte line to the same design, in the same plant, under a new name. Design continuity is documented in the Stryten Energy Manufacturer Declaration of August 17, 2023. The full brand story lives in our Absolyte battery history guide; this guide does one job: it gets you from the old number to a confirmed, orderable replacement model.
🎯 Quick Answer. Every legacy GNB Absolyte part number, GP or IIP, maps to a current Stryten Absolyte AGP equivalent. The product never left production; the brand changed to Stryten Energy. The reliable path from old number to new order is three steps: (1) read the model number off the module label, (2) gather five data points (label photo, full part number, cell count and string voltage, application and load, rack type and seismic requirement), (3) send them to a specialist for the confirmed like-for-like match and quote. Most requests get same-day family identification: 630-984-9718.
| Legacy (GNB era) | Current (Stryten era) |
|---|---|
| GNB Industrial Power | Stryten Energy |
| GNB Absolyte (GP / IIP) | Stryten Absolyte (AGP) |
| GNB Absolyte GP | Stryten Absolyte AGP |
This guidance draws on Tom Kierna, Battery Systems Specialist at Critical
Power Battery Solutions (CPBS), who has cross-referenced GNB part numbers since they were current production: 40+ years in industrial batteries, 15 of them at GNB and Stryten. CPBS is the battery division of Advanced Technical Services Inc. (ATS), founded 1981, ISO 9001 certified, Chicago area, and an authorized Stryten Energy reseller. If the reader already needs reassurance that the product is still made and supported, the availability question is answered in depth in our companion guide, Are GNB Batteries Still Available?
Where Is the Part Number on a GNB Absolyte Battery?
The most reliable location is the front label of each module, where the part number appears next to the words PART NO. If the label is damaged or painted over, the number survives in several other places. Check these four sources in order:
- Module front label. Each Absolyte module carries a label with the part number, nominal voltage, and rated capacity. This is the number to record, exactly as printed.
- Tray or rack stencil. Many installations stencil the assembly number on the steel tray or rack end panel. Useful when modules face a wall.
- Original purchase order or submittal package. The PO line item and the submittal drawings list every module part number in the string.
- Battery room one-line or as-built documentation. Commissioning records and as-builts usually carry the full string configuration.
Record the model or part number only for cross-reference purposes. The separate stamped date code answers a different question, how old the string is, and is covered step by step in How Old Are My GNB Absolyte Batteries?
Two practical notes from the field. First, label formats vary by era. Older units may carry GNB Industrial Power branding with an Exide Technologies footer line, later units carry Stryten Energy marks, and some installations contain modules relabeled during mid-life service. The part number format is what matters, not the logo around it. Second, on multi-string sites, record every string separately. Parallel strings installed years apart often carry different part numbers and different replacement priorities, and a single requisition that lumps them together is how mismatched orders happen. One label photo per string is the cheap insurance.
What Your Legacy GNB Part Number Tells You
At concept level, a legacy GNB Absolyte part number encodes the module cell count, the series family, and the plate or capacity designation. The leading digit before the hyphen generally reflects how many cells the module contains, and the alphanumeric block after it identifies the series and capacity class. That is as far as honest public information goes. No verifiable public decode key exists for GNB Absolyte part numbers, and any website that claims to decode every digit, or to convert any legacy number straight to a current SKU, is guessing. Treat those tables as a red flag, not a shortcut.
These five verified legacy part numbers show the format buyers typically hold. Each continues to have a current Stryten Absolyte AGP equivalent, confirmed through cross-reference:
| Verified legacy GNB part number | Series class | Typical application |
|---|---|---|
| 1-100A93 | 100 series Absolyte | Telecom -48VDC plants |
| 1-100A87 | 100 series Absolyte | Telecom and data center UPS |
| 1-100A45 | 100 series Absolyte | Data center UPS, utility |
| 6-50A07 | 50 series Absolyte | Data center, utility substation |
| 6-90A07 | 90 series Absolyte | Utility substation, large UPS |
The exact decode of your specific number, and the selection of the equivalent current model, is confirmed by a specialist working from your label photo and system data. That is the honest method, and it is faster than it sounds: most family identifications come back the same day.
Just as important is what not to infer from the number alone:
- Do not infer the Ah rating. The capacity class embedded in the number is rate-dependent shorthand, not the deliverable Ah at your discharge rate and end voltage.
- Do not infer rack compatibility. Two modules in the same series can ship in different tray formats. The number does not tell you what steel it sat in.
- Do not infer the seismic variant. Seismic qualification lives in the system configuration and rack hardware, not in the module part number.
- Do not order from the number alone. Use it to identify the family, then confirm the exact current model through the worksheet below.
The GNB to Stryten Family Mapping
GNB Absolyte GP and GNB Absolyte IIP both continue today as the Stryten Absolyte AGP line: same design, same plant, new name. The Stryten Energy Manufacturer Declaration of August 17, 2023 states that design, engineering, and product manufacturing remain unchanged from the GNB product to the Stryten Energy product. The current line is the Stryten Absolyte AGP: VRLA AGM, 2V cells, 104 to 4,800 Ah at the 8-hour rate, 20-year design life at 25 C, NEBS Level 3, UL recognized, IEEE 535 and 693 qualified, made in the USA.
Two qualifications keep this mapping honest:
- GP and IIP are different legacy families. Both cross to current AGP production, but they are not interchangeable with each other. Never mix Absolyte IIP and GP or AGP modules in one string. Replacement is planned at the string level, not module by module.
- Family mapping is not spec matching. The GP versus AGP specification deltas, and the safe swap protocols that follow from them, are covered in the GNB Absolyte GP replacement guide.
Why There Is No Honest 1:1 GNB to Stryten SKU Table
Because the right replacement depends on your system, not just the old number. A part number alone does not capture how the string was sized, mounted, or charged. Five variables decide the correct current model:
- String voltage and cell count. The replacement must match the series configuration of the plant, not just the module label.
- Ampere-hours at your discharge rate. Capacity tables are rate-dependent. The Ah number on the label is only meaningful at a stated rate and end voltage.
- Rack and tray fitment. Footprint, stacking arrangement, and connector reach must match the steel that stays behind.
- Seismic zone and anchoring. A Zone 4 site needs the seismic-qualified configuration and rack hardware.
- Charger settings. Float and equalize setpoints, and temperature compensation at 3 mV per degree F per cell (5.5 mV per degree C per cell), must line up with the new string.
A scraped lookup table that ignores these variables guesses wrong exactly where it hurts: rack fitment, seismic variants, and Ah class. That is why this guide gives you the family mapping plus a confirmation workflow instead of a fake database. Sizing verification itself is an engineering step, covered in the GNB Absolyte GP to Stryten AGP upgrade guide, and the most common sizing errors are cataloged in IEEE 485 battery sizing mistakes.
The GNB Cross-Reference Worksheet: 5 Data Points That Get You a Confirmed Match
Send these five items and you get back a confirmed Stryten Absolyte AGP equivalent and a written quote, usually with same-day family identification. This is the core conversion step of the whole process:
- A photo of the module label. One clear phone photo beats any verbal description. Include the whole label in frame.
- The full part number as printed. Every character matters, including the leading digit and any suffix letters.
- Number of cells or modules and the string voltage. Count the modules in the string and note the nominal bus voltage.
- Application and load. UPS, switchgear tripping, telecom plant, or substation duty, plus the backup time the system must deliver.
- Rack type and seismic requirement. Existing rack model or a photo of the rack, and whether the site carries a seismic specification.
Send the worksheet to Tom Kierna directly: 630-984-9718 or sales@criticalpowerbatterysolutions.com. Tom confirms the family, selects the like-for-like Stryten Absolyte AGP configuration, and flags anything in your data that needs an engineering look before ordering.
What happens on the other end of that email is a structured check, not a guess. The specialist verifies the family against the label photo, matches the cell count and capacity class to current AGP production, checks the rack and tray format against what Stryten ships today, and screens for the conditions that change the answer: a seismic site, a discharge rate far from the 8-hour rating, or a load that has grown since the original installation. If everything lines up, the confirmation and quote come back together. If something does not, you hear about it before money moves, which is the entire point of doing cross-reference this way.
After the Match: What Your Stryten Absolyte AGP Quote Includes
The confirmed cross-reference comes back as a complete, orderable package, not just a model number. A CPBS quote on a cross-referenced string includes:
- The like-for-like Stryten Absolyte AGP model and configuration, quoted from authorized channel stock as an authorized Stryten Energy reseller. How to verify any supplier claim of authorization is covered in the authorized Stryten distributor verification guide.
- Documentation. Authorization letter, certificate of origin, and the design-continuity paperwork your audit file or AHJ may require, detailed in the GNB and Stryten compliance documentation guide.
- Freight and lead time in writing. Industrial battery strings move as Class 8 nonspillable freight; the quote states current lead time and delivery terms.
From there, hand each next step to the guide that owns it: the physical swap procedure lives in the GNB Absolyte replacement field guide, replacement timing in When to Replace Telecom Backup Batteries, and full RFQ spec data in the Stryten Absolyte AGP specifications library and the spec sheet downloads. Oil and gas facilities have a dedicated vertical guide: GNB to Stryten cross-reference for oil and gas.
How to Write the Requisition Line for a Cross-Referenced Battery
Reference both numbers on the requisition: the legacy GNB part number as the cross-reference source and the confirmed Stryten Absolyte AGP model as the order item. This keeps the paper trail intact for asset management, warranty, and any future audit. A clean line item looks like this:
- Order item: the confirmed Stryten Absolyte AGP model and configuration from the written quote.
- Cross-reference note: replaces legacy GNB Absolyte [your part number], cross-reference confirmed by authorized Stryten reseller.
- Documentation requirement: authorization letter, certificate of origin, and design-continuity documentation to be delivered with the order.
- Scope note: string-level replacement; quantity equals the full string, not individual modules.
Procurement teams that write the line this way close the loop in one pass: the buyer can defend the substitution, the warehouse receives what the label says, and the audit file explains itself five years later.
Send Your GNB Part Number to a Specialist Today
The fastest path from legacy part number to confirmed replacement is to send your worksheet now. Call Tom Kierna at 630-984-9718, email sales@criticalpowerbatterysolutions.com, or use the contact form. Most requests get same-day family identification. If your load profile has changed since the original installation, start with the pre-consultation checklist so the sizing conversation is productive on the first call. And if stakeholders upstream still ask whether the product line is even alive, send them the availability companion: Are GNB Batteries Still Available?
Frequently Asked Questions
What replaces GNB Absolyte batteries?
Stryten Absolyte AGP replaces GNB Absolyte. Stryten Energy, formerly GNB Industrial Power, builds the same battery to the same design in the same plant, per the Stryten Energy Manufacturer Declaration of August 17, 2023. Your exact replacement model is confirmed by cross-referencing your legacy part number.
What is the Stryten equivalent of GNB Absolyte GP?
The Stryten Absolyte AGP line is the current equivalent of GNB Absolyte GP. The family carried over unchanged through the brand transition: VRLA AGM, 2V cells, 20-year design life. The specific AGP module that matches your GP part number is confirmed from your label data by a specialist.
How do I cross-reference a GNB battery part number?
Three steps: read, gather, send. Read the part number off the module label, gather five data points (label photo, exact number, cell count and string voltage, application and load, rack and seismic detail), and send them to a specialist at 630-984-9718. You get back a confirmed Stryten AGP equivalent and quote.
Where is the part number on a GNB Absolyte battery?
On the front label of each module, next to PART NO. If the label is unreadable, check the tray or rack stencil, the original purchase order, the submittal package, or the battery room as-built documentation. Record the model number exactly as printed, including the leading digit.
What replaces GNB Absolyte 1-100A93?
1-100A93 is a legacy 100 series Absolyte part number with a current Stryten Absolyte AGP equivalent confirmed via cross-reference. Send a label photo and your string details to Tom Kierna at 630-984-9718 and you get the confirmed like-for-like AGP model, usually the same day.
Are old GNB part numbers still valid for ordering?
They are valid as reference, not as order numbers. Distributors no longer transact on legacy GNB SKUs, but every one of them translates to a current Stryten Absolyte AGP configuration. An authorized reseller converts your old number into the current orderable model and quotes it from authorized channel stock.
What is the difference between Absolyte GP, Absolyte IIP, and Absolyte AGP?
GP and IIP are distinct legacy GNB families; AGP is the current Stryten production line. Both legacy families cross-reference to AGP equivalents, but GP and IIP are not interchangeable with each other. Identify which family you own from the label before planning any replacement.
Can I mix new Stryten Absolyte AGP modules with old GNB Absolyte modules in one string?
No. Never mix generations or families in one string. Unequal internal resistance and age cause charge imbalance that shortens the life of every module in the string. Replacement is planned at the string level, which is exactly what the cross-reference worksheet is designed to support.
Is Stryten Absolyte AGP a drop-in replacement for GNB Absolyte?
At the family level, yes: same design, same plant, same format. Fitment on your specific rack, the Ah class at your discharge rate, and seismic configuration still get verified before ordering. That verification is the difference between a true like-for-like swap and an expensive surprise on delivery day.
Is there a GNB to Stryten battery conversion chart?
A family-level chart exists, and it is in this guide. An honest public 1:1 SKU chart does not. The correct current model depends on string voltage, Ah at your rate, rack fitment, seismic zone, and charger settings. Sites that publish full conversion tables are guessing on the variants that matter most.
Do I need to re-size my battery system when cross-referencing an old part number?
Not usually for a like-for-like swap, but verify when anything changed. If load, runtime requirement, or temperature conditions moved since the original installation, the replacement should be checked against the current load profile before ordering. The cross-reference flags this automatically when your worksheet data raises questions.
Where can I buy Stryten Absolyte AGP replacement batteries?
Through an authorized Stryten Energy reseller such as CPBS. Authorized channel supply comes with the authorization letter, certificate of origin, and design-continuity documentation. Call 630-984-9718 or email sales@criticalpowerbatterysolutions.com for a confirmed cross-reference and written quote.
About the author. Tom Kierna is Battery Systems Specialist at Critical Power Battery Solutions, the battery division of Advanced Technical Services Inc. (ATS), founded 1981, ISO 9001 certified. Tom has spent 40+ years in industrial battery systems, including 15 years at GNB and Stryten, and has cross-referenced GNB part numbers since they were current production. He advises procurement teams and facility engineers on legacy GNB cross-reference, Stryten Absolyte AGP sourcing, and authorized-distributor verification. Direct line: 630-984-9718. Last updated 2026-06-10.
References
- Stryten Energy. Manufacturer Declaration of Design Continuity: GNB to Stryten. Stryten Energy, August 17, 2023. Hosted PDF. Source for the design-continuity statement: design, engineering, and manufacturing unchanged from the GNB product to the Stryten Energy product.
- Stryten Energy. E-Series Product Branding Change Letter. Stryten Manufacturing, March 6, 2023. Hosted PDF.
- Stryten Energy. CPBS / ATS Stryten Energy Authorized Reseller Letter. Stryten Energy, 2023. Hosted PDF.
- Stryten Energy. E-Series Absolyte AGP Product Brochure (SE1085). Stryten Energy Absolyte AGP product page. Source for the 20-year design life, 104 to 4,800 Ah capacity range at the 8-hour rate, and UL94 V-0 container specification.
- Stryten Energy. E-Series GP Installation and Operations Manual, Absolyte AGP (SE2001). Stryten Energy, 2023. Source for 2.25 VPC float voltage and the 3 mV per degree F per cell (5.5 mV per degree C per cell) temperature compensation coefficient.
