The battery leaked on these motherboards, are they ruined?

NiCD/NiMH batteries leak when they are old and severely discharged, and this commonly causes damage to vintage computers. Here is a 286 and a 386DX motherboard that had the battery leak. Are they ruined?

386 Motherboard:
Unknown brand
C&T Chips Chipset P82C205, P82B305, P82A304, P82A303, P82C302, P82C301 P82A306, PA82B305
Information page on Stason.org:
https://stason.org/TULARC/pc/motherbo...

286 Motherboard:
DTK PTM-1030 Mini '286
Chipset: VLSI VL82C100
https://stason.org/TULARC/pc/motherbo...

-- Video Links

DTK case repair (damage caused by battery leakage)
   • Restoring an old AT computer case  

BIOS post codes
http://www.bioscentral.com/postcodes/...

ISA/PCI Post Code Diagnostic Card:
https://amzn.to/3twmBXc

BIOS images and pictures for the 386 motherboard:
https://archive.org/details/ami-386-b...

High Res Pictures:
Sorry not uploaded yet

-- Tools

Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.16...

Jonard Tools EX-2 Chip Extractor:
https://amzn.to/2VazxDS
https://www.jonard.com/Products/EX-2-...

Wiha Chip Lifter:
https://amzn.to/3a9ftWw
https://www.wihatools.com/precision-c...

O-Ring Pick Set: (I use these to lift chips off boards)
https://amzn.to/3a9x54J

Elenco Electronics LP-560 Logic Probe:
https://amzn.to/2VrT5lW

Hakko FR301 Desoldering Iron:
https://amzn.to/2ye6xC0

Rigol DS1054Z Four Channel Oscilloscope:
https://www.rigolna.com/products/digi...

Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
https://amzn.to/3adRbuy

TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
https://amzn.to/2wG4tlP
https://www.aliexpress.com/item/33000...

TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MI...

EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/

DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DS...

Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-...

Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.ebay.com/itm/14-16-18-20-...

RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
http://www.retrotink.com/

Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-...

Heat Sinks:
https://www.aliexpress.com/item/32537...

Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI

--- Links

My GitHub repository:
https://github.com/misterblack1?tab=r...

Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
https://www.commodorecomputerclub.com/

--- Instructional videos

My video on damage-free chip removal:
   • How to remove chips without damaging ...  

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino