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Stalco 20V battery guide: S-Volt packs & chargers at Saniso
A Stalco 20V battery is the heart of the S-Volt cordless platform: one Li-ion battery family that powers matching Stalco tools, chargers and sets. At Saniso you buy Stalco as a brand; Saniso B.V. in Zwaag is the Dutch sales channel, not the manufacturer. Below you will find how S-Volt works, which 2Ah / 4Ah / 8Ah packs Saniso stocks, how to choose capacity, which chargers fit, and a few concrete tool and set examples — without dumping the full catalogue.
What is the S-Volt system?
S-Volt is Stalco’s 20V Max Li-ion platform. In practice that means:
- Stalco = the brand on the tool and the battery.
- S-Volt = the shared 20V battery interface and ecosystem.
- Saniso = where you can order selected S-Volt products in the Netherlands (webshop/showroom and wholesale/partners).
One battery can move between compatible S-Volt tools, so you invest in capacity and chargers once and expand the kit over time. Saniso carries a focused selection of S-Volt batteries, chargers, tools and sets — more than the examples in this article, but not every item from the wider Stalco range.
Stalco 20V batteries at Saniso: 2Ah, 4Ah and 8Ah
Saniso currently lists four S-Volt packs. Prices below are a site snapshot (incl. 21% VAT / excl. VAT) and may change; stock is always a moment-in-time check on the product page.
| Model | Capacity | Energy | Weight (approx.) | Price incl. / excl. | Product |
|---|---|---|---|---|---|
| BLS20-2AH (S-97381) | 2Ah | 40Wh | ~0.4 kg | €41.81 / €34.55 | BLS20-2AH |
| BLS20-4AH (S-97383) | 4Ah | 80Wh | ~0.68 kg | €73.71 / €60.92 | BLS20-4AH |
| BLS20-4AHP (S-97385) | 4Ah | 80Wh | ~0.6 kg | €78.48 / €64.86 | BLS20-4AHP |
| BLS20-8AHP (S-97387) | 8Ah | 160Wh | ~0.98 kg | €120.56 / €99.64 | BLS20-8AHP |
4AH vs 4AHP — same amp-hours, different pack
Both the BLS20-4AH and the BLS20-4AHP are rated 4Ah / 80Wh. The P versions (4AHP and 8AHP) use 21700 cells. On Saniso the 4AHP is also slightly lighter (~0.6 kg vs ~0.68 kg). Choose 4AH when you want the standard 4Ah pack; choose 4AHP when you specifically want the 21700 “P” variant. Do not treat them as different capacities — they are not.
Shared practical traits across these packs (as listed on the battery pages): charge-level indicator and protection against over-discharge, overload and high temperature, plus an integrated battery protection circuit. Rated voltage: 20V Max.
How to choose capacity
There is no universal “best” Stalco 20V battery — it depends on how you work:
- **2Ah (BLS20-2AH)** — light (~0.4 kg), compact starter pack for lighter or intermittent jobs, or as a spare for short tasks.
- **4Ah (BLS20-4AH / BLS20-4AHP)** — the middle ground for everyday cordless use; also the capacity included as two packs in set S-97377.
- **8Ah (BLS20-8AHP)** — highest capacity in this Saniso list (160Wh), for longer sessions on more demanding tools, still under ~1 kg.
Tip: many pros run two packs of the same capacity (one on the tool, one on the charger) instead of guessing runtime. Saniso does not publish runtime claims here — plan around capacity (Ah/Wh) and your own workload.
Chargers for the S-Volt platform
To keep batteries rotating, match a Stalco S-Volt charger to how many packs you own:
- BCS20-2A (S-97391) — 2A / 55W single charger
- BCS20-2X (S-97392) — dual charger, 105W rated power
- BCS20-4A (S-97393) — 4A / 100W charger (also included in set S-97377)
- BCS20-9AP (S-97395) — higher-output S-Volt charger option
- UCS20 (S-97389) — USB charger that works on the battery (handy for phones/power banks on site)
You do not need every charger model; start with one solid charger (for example BCS20-2A or BCS20-4A) and add a dual or faster unit when pack count grows.
Tool and set examples (not the full catalogue)
Saniso stocks more S-Volt tools and sets than fit in one article. Three concrete examples:
- BSS20-457BL — cordless belt sander on the S-Volt system
- FLS20-20W — battery spotlight for workshop, renovation or site lighting
- Set S-97377 — rotary hammer + impact drill/driver + angle grinder + 2× BLS20-4AH + BCS20-4A charger + tool bag
Together these show the idea: one battery family across sanding, lighting and a renovation set. Browse Saniso for additional S-Volt drills, grinders, saws and kits when you are ready to expand.
Buying tips at Saniso
1. Start from the battery — pick capacity first (2Ah, 4Ah/4AhP or 8Ah), then tools that share S-Volt. 2. Add a matching charger — at least BCS20-2A or BCS20-4A; consider BCS20-2X if you swap packs often. 3. Check live stock and price — figures in this article are snapshots. 4. Need help? Saniso B.V., De Corantijn 95, 1689 AN Zwaag · +31 85 488 5920 · [email protected] (preferably Mon–Fri 08:00–16:00).
Ready to choose? Open the anchor pack BLS20-2AH or jump straight to set S-97377 if you want tools, batteries and a charger in one go.
Frequently asked questions
What is the difference between Stalco and S-Volt?
Stalco is the brand. S-Volt is the 20V Li-ion platform those batteries and tools share.
Is Saniso the manufacturer of Stalco?
No. Saniso B.V. in Zwaag sells Stalco / S-Volt products; Stalco is a separate brand/manufacturer.
What is the difference between BLS20-4AH and BLS20-4AHP?
Both are 4Ah / 80Wh. The 4AHP uses 21700 cells and weighs about 0.6 kg versus about 0.68 kg for the 4AH.
Which Stalco 20V battery should I buy first?
For a light spare or starter, BLS20-2AH. For everyday work, a 4Ah pack (4AH or 4AHP). For longer sessions, BLS20-8AHP.
Which charger do I need?
At minimum one S-Volt charger such as BCS20-2A or BCS20-4A. Dual charging: BCS20-2X. USB from the pack: UCS20.
Does Saniso sell only these tools?
No. Saniso carries additional S-Volt tools and sets beyond BSS20-457BL, FLS20-20W and S-97377. Use those as entry points, then browse the shop for the rest of the range.
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