{"id":3542,"date":"2026-09-18T17:07:06","date_gmt":"2026-09-18T09:07:06","guid":{"rendered":"https:\/\/www.bosaenergy.cn\/?p=3542"},"modified":"2026-09-18T17:07:13","modified_gmt":"2026-09-18T09:07:13","slug":"lithium-battery-upgrade-for-floor-scrubbers-is-retrofit-worth-it","status":"publish","type":"post","link":"https:\/\/www.bosaenergy.cn\/ru\/lithium-battery-upgrade-for-floor-scrubbers-is-retrofit-worth-it\/","title":{"rendered":"Lithium Battery Upgrade for Floor Scrubbers: Is Retrofit Worth It?"},"content":{"rendered":"

What \u201cRetrofit Worth It\u201d Actually Means<\/h2>\n\n\n\n

A floor scrubber earns its keep in productive square metres per labour hour. Everything that interrupts that output \u2014 mid-shift pack swaps, watering, cool-down, late-shift voltage sag, a dead machine at 06:40 \u2014 is a cost line even when it never appears as a spare-part invoice.<\/p>\n\n\n\n

Five cash drivers decide whether Lithium Battery Upgrade for Floor Scrubbers: Is Retrofit Worth It? lands in the yes column:<\/p>\n\n\n\n

Uptime per shift.<\/strong> Lithium holds a flatter voltage window, so brush pressure and travel speed do not collapse in the last hour the way a sulphated flooded pack does. Tennant\u2019s December 2024 launch of lithium T12 and T16 units put high-capacity lithium runtimes in the \u201cover three to nearly six hours\u201d band. The July 2025 ROI briefing attributes up to 60% more runtime between charges to the chemistry change, not to a larger chassis.<\/p>\n\n\n\n

Packs per machine life.<\/strong> Flooded and AGM packs on commercial scrubbers commonly need replacement every two to four years under daily use. Industrial LFP cells are specified at \u22653,500 cycles at 80% DoD. OEM lithium warranties of five years (Tennant, Nilfisk, Betco) are the contractual expression of a more conservative cycle budget. One pack that outlives the first chassis overhaul changes the replacement line from recurring opex to a single capex event.<\/p>\n\n\n\n

Labour that is not cleaning.<\/strong> Watering, equalization, acid-spill response, and hoist swaps consume technician hours. Lithium removes watering and the second-pack logistics chain.<\/p>\n\n\n\n

Energy and demand.<\/strong> Round-trip efficiency on a matched lithium pack and charger is typically in the mid-90s at pack level, versus the 70\u201385% system band common on flooded plus conventional chargers. Opportunity plugs also let a site stagger charging off the facility peak.<\/p>\n\n\n\n

Machine corrosion and listing risk.<\/strong> Electrolyte leaks shorten tank life. A non-listed aftermarket pack can also void the machine\u2019s UL Type E label. That risk is a TCO item and a claims item. It is the line that separates a valid retrofit from a tray that merely fits.<\/p>\n\n\n\n

The chemistry is the enabler. The kit, the charger handshake, and the remaining chassis hours are what close the investment.<\/p>\n\n\n\n

Stay Flooded, Retrofit, or Buy Factory Lithium<\/h2>\n\n\n\n
Factor<\/th>Keep flooded \/ AGM<\/th>Approved lithium retrofit<\/th>Factory lithium machine<\/th><\/tr><\/thead>
Day-1 cash<\/td>Lowest<\/td>Mid: pack + charger + labour, typically 60\u201380% of a new lithium machine on the same class<\/td>Highest<\/td><\/tr>
Usable energy per kg<\/td>Low; ballast is incidental<\/td>High if the tray and ballast are re-validated<\/td>Designed around the lighter pack<\/td><\/tr>
Full charge<\/td>8\u201312 h plus cool-down<\/td>1\u20133 h to a high SOC when the lithium charger is specified<\/td>Same, with OEM handshake<\/td><\/tr>
\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0440\u044f\u0434\u043a\u0438<\/td>Not a design intent<\/td>Design intent only with the matched charger: 15\u201340% adds<\/td>Design intent<\/td><\/tr>
Operating SOC floor<\/td>Avoid chronic deep discharge; water after charge<\/td>Keep above 20\u201330% SOC<\/td>Keep above 20\u201330% SOC<\/td><\/tr>
Voltage under load<\/td>Sags as SOC falls<\/td>Flat through most of the usable window<\/td>Flat; controller already mapped<\/td><\/tr>
Rated cycle life<\/td>~500\u20131,500 at ~80% DoD<\/td>Cell-level LFP \u22653,500\u20135,000; OEM claims 1,500\u20134,000 by model<\/td>Same chemistry, full OEM warranty stack<\/td><\/tr>
Typical warranty<\/td>1\u20132 years, often pro-rated<\/td>Only as good as the pack maker and whether the OEM accepts the kit<\/td>5 years (Tennant, Nilfisk, Betco GeneSys)<\/td><\/tr>
Machine listing<\/td>Unchanged<\/td>At risk unless the OEM documents the kit<\/td>Unchanged<\/td><\/tr>
Packs per multi-shift machine<\/td>Two packs plus a change-out cart<\/td>One pack that stays in the machine<\/td>One pack<\/td><\/tr>
Best fit<\/td>One short shift, watering already done<\/td>Sound chassis, published OEM kit, multi-shift route<\/td>New buy, AMR platform, or chassis near overhaul<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

The table is the buying rule. If the site runs one short shift and already waters on schedule, the lithium premium can take four to six years to close \u2014 retrofit or factory. If the site runs two shifts, skips watering, or parks a second flooded pack as a spare, the premium usually closes inside 18\u201336 months. IEEE Spectrum\u2019s 2026 conversion review put multi-shift industrial transitions in a similar 36-month band when the pack, charger, and firmware are validated together.<\/p>\n\n\n\n

What a Valid Lithium Retrofit Includes<\/h2>\n\n\n\n

A tray swap is not a retrofit. A valid lithium conversion on a floor scrubber has five parts, all written on the same purchase order.<\/p>\n\n\n\n

1. Chemistry and form factor.<\/strong> Industrial LFP, not a high-nickel pouch pack designed for a different vehicle class. Tray dimensions, terminal position, and mass must be confirmed against the machine\u2019s stability and drive-motor current. Weight reduction is a benefit on a walk-behind; on some riders it is a ballast problem that the OEM already solved with spacers or a specified pack mass.<\/p>\n\n\n\n

2. BMS that the machine can live with.<\/strong> Cell-level voltage, temperature, and current limits. A pack that goes silent when the scrubber controller expects a flooded voltage curve will look like a dead machine at 14:00.<\/p>\n\n\n\n

3. The lithium charger, not the flooded one.<\/strong> Tennant\u2019s T16 and T17 operator documents are explicit: charge the lithium pack only with the lithium charger supplied or specified for that serial range, in a ventilated area, preferably between 0 \u00b0C and 27 \u00b0C. The T12\/T16 programmable onboard-charger kit (instruction bulletin 9022394) even has a dedicated Lithium-Ion DIP-switch position \u2014 proof that the flooded default is the wrong algorithm. Nilfisk\u2019s SC50 lithium base kit 56125036 replaces the main power connector, adds a DC\u2013DC converter, and requires the controller battery type to be set to Lithium so the charge algorithm moves off the AGM profile (charger algo 339). A flooded profile on a lithium pack is a warranty event and a safety event.<\/p>\n\n\n\n

4. Controller and firmware acknowledgement.<\/strong> OEM kits change a battery-type flag. Aftermarket packs that skip that step leave the machine thinking it still has a wet tray. Opportunity charging then fights the algorithm instead of using it.<\/p>\n\n\n\n

European distributor conversions published in 2025\u20132026 \u2014 Tennant T7 packs in Finland and Viper ROS1300 riders in Greece swapped to industrial LFP \u2014 reported the expected operational gains (zero watering, opportunity charging, design life in the 3,500-cycle \/ ~10-year band). Those results hold only where the charger and application match were part of the job, not an afterthought.<\/p>\n\n\n\n

2026 OEM Runtime and Kit Map<\/h2>\n\n\n\n

Convert vendor hours into your square metres before you sign. Eco-mode figures assume light soil, moderate brush pressure, and a warm pack. Heavy soil, high down-pressure, and cold stores cut those hours.<\/p>\n\n\n\n

Platform<\/th>Pack \/ voltage<\/th>Published runtime or kit note<\/th>Warranty \/ cycle note<\/th>Source class<\/th><\/tr><\/thead>
Tennant T16 ride-on scrubber<\/td>36 V, 240 Ah \/ 320 Ah Li-ion<\/td>Up to 4.0 h \/ up to 5.7 h economy (NA spec); AU 2026 guide lists up to 5.4 h lithium<\/td>5 years; U.S. industrial text also 5 years or 2,000 cycles<\/td>OEM spec + Business Wire<\/td><\/tr>
Tennant T12 compact rider<\/td>High-capacity Li-ion<\/td>AU 2026 product guide: up to 6.5 h lithium versus ~4 h standard<\/td>5-year lithium warranty<\/td>OEM product guide<\/td><\/tr>
Tennant T17 rider<\/td>Li-ion 36 V 456 Ah (P\/N 1274155) or 684 Ah (P\/N 1274156)<\/td>Lithium-ion battery system in the operator manual; lithium-specific chargers listed (50 A \/ 200 A)<\/td>Lithium-specific charger required<\/td>OEM parts list Rev. 11\/2025<\/td><\/tr>
Tennant M17 sweeper-scrubber<\/td>36 V \/ 684 Ah \/ 26.3 kWh Li-ion<\/td>Up to 4.0 h simultaneous sweep\/scrub; up to 12 h inside 24 h with opportunity charging versus up to 5.0 h on 840 Ah flooded<\/td>Lithium-specific charging<\/td>OEM NA spec sheet Rev. 11\/25<\/td><\/tr>
Tennant T600 \/ T600e walk-behind<\/td>36 V 84 Ah (4241077); 168 Ah kit (4239124); 252 Ah kit (4239119); 168 Ah retrofit kit with onboard charger (4239127)<\/strong><\/td>Official lithium replacement and retrofit kits on the Rev. 6\/2026 parts sheet<\/td>Same lithium warranty stack when installed as specified<\/td>OEM parts sheet<\/td><\/tr>
Tennant compact \/ walk-behind<\/td>T191, T291, T391, T581, T681<\/td>Optional lithium per July 2025 ROI briefing<\/td>Same lithium warranty stack<\/td>OEM blog<\/td><\/tr>
Nilfisk floorcare Li-ion platform<\/td>Modular 24 V \/ 36 V packs<\/td>Fast charge to 90% in ~2 h; modules can be added<\/td>5 years or 1,500 cycles, non-pro-rated<\/td>OEM technology page<\/td><\/tr>
Nilfisk SC50 autonomous stand-on<\/td>Lithium base kit 56125036 (form 56090487)<\/td>Flooded-to-lithium conversion after SN 1000073534; connector, DC\u2013DC, controller flag<\/td>5 years \/ 1,500 cycles<\/td>OEM kit sheet<\/td><\/tr>
Nilfisk SC500 \/ SC2000 \/ SC550 class<\/td>24 V \/ 50\u201364 Ah Li-ion modules<\/td>Official lithium variants and expansion kits<\/td>5 years \/ 1,500 cycles<\/td>OEM kit sheet + 2026 dealer list<\/td><\/tr>
Nilfisk CS7020 sweeper-scrubber<\/td>38.6 V \/ 608 Ah Li-ion<\/td>Up to 3.5 h sweep + scrub at highest pressure; low-mode combined work up to 6.3 h in NZ brochure<\/td>5-year battery warranty<\/td>2026 dealer list + OEM brochure<\/td><\/tr>
Betco GeneSys walk-behind<\/td>24 V 60 \/ 120 \/ 150 \/ 200 Ah Li-ion<\/td>Charge anytime; consistent voltage through the shift<\/td>5-year full replacement; marketed life up to 10 years<\/td>OEM warranty + BSC case study<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Use the map as a filter, not as a promise. Ask the dealer for the duty-cycle assumption behind every \u201cup to\u201d hour figure, and write the charger model on the same line as the pack. Prefer an OEM lithium kit on T12\/T16\/T17\/T600-class machines and Nilfisk SC-class walk-behinds before an aftermarket tray that has never sat in that controller.<\/p>\n\n\n\n

Five-Year TCO: When the Premium Closes<\/h2>\n\n\n\n

Figures below are decision-grade bands for one mid-size walk-behind or compact rider on a two-shift indoor route (250 operating days\/year). Adjust labour and energy to the local tariff.<\/p>\n\n\n\n

Cost component (5 years)<\/th>Flooded \/ AGM on current machine<\/th>Approved LFP retrofit<\/th>New factory lithium machine<\/th><\/tr><\/thead>
Pack + compatible charger (Day 1)<\/td>$900\u2013$1,300 (already owned or replacement)<\/td>$2,200\u2013$3,800 including labour<\/td>Pack bundled; machine premium $4,000\u2013$12,000+ by class<\/td><\/tr>
Replacement packs<\/td>1\u20132 events ($700\u2013$1,800)<\/td>$0 inside a 5-year \/ \u22653,500-cycle rating<\/td>$0 inside OEM lithium warranty<\/td><\/tr>
Watering, equalization, spill labour<\/td>$250\u2013$900<\/td>$0<\/td>$0<\/td><\/tr>
Swap \/ downtime cost<\/td>$400\u2013$1,200<\/td>$0 (pack stays in the machine)<\/td>$0<\/td><\/tr>
Grid energy<\/td>Higher kWh and coincident peak<\/td>~25\u201335% less energy at the meter on a matched charger<\/td>Same chemistry advantage<\/td><\/tr>
Listing \/ warranty risk<\/td>\u041d\u0438\u043a\u0442\u043e<\/td>Real if the kit is unofficial<\/td>\u041d\u0438\u043a\u0442\u043e<\/td><\/tr>
Illustrative 5-year battery TCO<\/td>$2,400\u2013$10,300<\/td>$2,200\u2013$4,600 when the kit is approved<\/td>Battery line similar; chassis capex is separate<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

A June 2026 commercial-scrubber TCO model published for U.S. buyers put single-shift AGM and LFP close to each other at the low end of that range, and showed a 58% five-year reduction ($10,300 \u2192 $4,350) once multi-shift replacements, watering, and swap downtime were counted. Betco\u2019s BSC case study is consistent at fleet scale: about $5,000 avoided wet-pack cost per walk-behind, or $250,000 across a 50-machine annual buy, before the less tangible gain from opportunity charging and stable late-shift voltage.<\/p>\n\n\n\n

Payback is not a single number.<\/p>\n\n\n\n

    \n
  • Retrofit closes inside 18\u201336 months<\/strong> on a sound chassis that already runs two shifts, already skips watering, or already keeps a spare flooded tray.<\/li>\n\n\n\n
  • Factory lithium wins<\/strong> when the current machine needs a deck, tank, or controller overhaul inside two years, or when the site is buying AMR platforms (Tennant T16AMR and peers) that were designed around lithium from the first serial.<\/li>\n\n\n\n
  • Stay flooded<\/strong> when the machine is a one-shift school or clinic pack that is watered on schedule and still has unused flooded life.<\/li>\n<\/ul>\n\n\n\n

    Lithium Battery Upgrade for Floor Scrubbers: Is Retrofit Worth It? only holds in the first of those three rows. A published OEM kit number is what moves a quote from \u201ctray swap\u201d to that first row.<\/p>\n\n\n\n

    <\/h2>","protected":false},"excerpt":{"rendered":"

    What \u201cRetrofit Worth It\u201d Actually Means A floor scrubber earns its keep in productive square metres per labour hour. Everything that interrupts that output \u2014 mid-shift pack swaps, watering, cool-down, late-shift voltage sag, a dead machine at 06:40 \u2014 is a cost line even when it never appears as a spare-part invoice. Five cash drivers […]<\/p>\n","protected":false},"author":1,"featured_media":3545,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3542","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"\nLithium Battery Upgrade for Floor Scrubbers: Is Retrofit Worth It? - BOSA lithium battery<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bosaenergy.cn\/ru\/lithium-battery-upgrade-for-floor-scrubbers-is-retrofit-worth-it\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lithium Battery Upgrade for Floor Scrubbers: Is Retrofit Worth It? - BOSA lithium battery\" \/>\n<meta property=\"og:description\" content=\"What \u201cRetrofit Worth It\u201d Actually Means A floor scrubber earns its keep in productive square metres per labour hour. 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