Bolt Energy USA 51.2 Volt 105AH (33-51105SH)
SKU 33-51105SH
Bolt Energy USALast updated: 21 September 2026
Battery and charging
- Which charger the maker permits
- Only Bolt's own charger
- Rated charge cycles
- 2500 cycles at 1C, or 4000 at 0.2C
- Maximum in parallel
- Two, at most
“ONLY use the charger provided by Bolt Energy USA when charging. Check the voltage of Battery and relevant connectors before using.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Disputed
“13 Cycle Life 1C@DOD100% ≥2500 cycles 0.2C@DOD100% ≥4000 cycles”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Maximum 2 packs of batteries connect in parallel. 3) Be sure the voltage difference range of the two batteries is within 0.1V.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Battery care and safety
- How fast it loses charge standing
- At least 3% a month, as this manual prints it
- When the heater comes on
- Below −4 °F it heats and will not charge at all
- Storage temperature
- Between 34 °F and 110 °F, and never warmed artificially
- Charge temperature range
- 14 < T ≤ 131 °F
Disputed
“14 Self-discharge Rate ≥3%/Month”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Temperature Condition System Action Design Intent T < -4°F Upon charge initiation, the system activates heating and suspends charging. Cold-temperature protection to prevent lithium plating and permanent cell damage.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Disputed
“Storage Climate: A. High-Temperature Storage: Avoid storing the battery in temperatures above 110°F (43°C), as excessive heat may reduce performance and lifespan. B. Low-Temperature Storage: We recommend not storing the battery in temperatures below 34°F (1°C) for extendedperiods. Never use an external heat source, such as a portable heater, to warm the battery, as this can cause damage or unsafe conditions.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“11 Charge Method Charge 14 < T ≤ 131° F Discharge -4 <T≤ 140° F”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Size and fit
- Overall dimensions
- 12.80 × 12.01 × 10.75 in
- Terminal torque
- 132 in-lb, and no more
- Weight as stated
- 101 lb
Disputed
“15 Battery Dimension L = 12.80 IN W = 12.01 IN H = 10.75 IN”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Install your positive and negative battery and charger cables (red to positive, black to negative). Using a torque wrench, tighten to 132 in-lbs (11ft-lbs).”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Disputed
“9 Total Weight 101 LBS 10 Impedance at 1000Hz. ≤50mΩ”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Buying and owning it
- Warranty term
- Twelve years — but two if it is not registered in 30 days
“Nivel Parts and Manufacturing, LLC (“Nivel”) warrants each Bolt Energy LiFePO4 Lithium battery (“Product” or “Battery”) to be free of manufacture defects in material or workmanship for a period of twelve (12) Years from the date that the Battery is registered via serial number on the Company’s official web portal (https:// boltenergyusa.com/battery-warranty- registration/). If the Battery is not registered within thirty (30) days of purchase, this warranty is limited to two (2) years from the original purchase date, as determined by the Battery serial number and/or invoice.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Warranty, returns and support
- Whether the warranty transfers on resale
- Transferable, if the new owner registers within 15 days
- What the warranty does not cover
- Ends at 3,000 cycles, whatever the calendar says
“Transferable (Y/N) Yes. Must register each Transfer within 15 days of ownership change. Proration Schedule Year - 7 and 8 = 45% of Current IMAP Year - 9 and 10 = 60% of Current IMAP Year - 11 and 12 = 70% of Current IMAP”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“This Limited Warranty does not cover a Product that has reached its normal end of life due to usage 3,000 charge cycles or above which may occur prior to the Warranty Period. A battery can deliver only a fixed amount of Energy over its life which will occur over different periods of time depending on the application. For example, cycling the battery more than 1 time daily, will cause the normal end of life to occur before the end of the Warranty Period.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Other findings
- Auto sleep after inactivity
- Sleeps after 12 hours; hold a button 2 seconds to wake
- Bluetooth range
- 32 feet
- Capacity retained at temperature
- At least 70% of capacity at −4 °F, 90% at freezing
- Case features
- Stainless handles, pressure valve, drip-proof edge, mounting feet
- Charger extension cord limit
- No cord over 15 ft, and nothing lighter than 12 AWG
- Charger warranty term
- Two years on the charger, one on everything else
- Charge storage retention
- At least 97% left after a month in storage
- Heating logic overlap
- Two bands of the table overlap and disagree
- Heating system activation
- Only while charging — including from regenerative braking
- Internal impedance
- 50 mΩ or less, at 50% charge
- Manufacturer denies series connection
- Never in series — it voids the warranty
- Models this document covers
- Shared with 33-51105SB
- Professional kit contents
- The standard kit plus a voltage reducer, solenoid and 2 AWG cables
- Standard kit contents
- Meter, charger, hardwire adapter, extension cord, brackets, Bluetooth
- Storage state of charge
- 50–80% charged, charger off, battery switched off
- Transport state of charge
- Half charged in transit
- Warranty dealer restriction
- Approved Nivel dealers only — no grey market
“Your battery features an auto-sleep function that activates after 12 hours of inactivity. To wake it, simply use one of the two on/off buttons mentioned above.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“The Bolt USA app supports Apple and Android systems, supports English and dual language switching. When Bluetooth® signal is strong, it can be connected within 32 feet. In the APP store install “Bolt USA”. You will be able to read the voltage, SOC, battery history record, update firmware, send data to email or cloud server for fast after sales service.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“5 Discharge Temperature Characteristic at 0.2C -4°F (6h) ≥70% Discharge capacity at specified temperature/capacity at 77°F 32°F (6h) ≥90% 77°F (4h) ≥100% 131°F (4h) ≥97%”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Stainless Steel Handles -Post 5/16 Switch (Power On/Off Button) PV (Pressure Valve) CAN (Communication Area Network) SOC (State of Charge Meter) BT (Bluetooth ® ) Mounting Feet +Post 5/16 Drip Proof Edge”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Do not use an extension cord over 15ft long with a rating below 12AWG. Longer cords with lighter gauge wire will cause heat resistance, increasing the risk of an electrical fire.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Nivel warrants each LiFePO4 Lithium battery charger to be free of manufacture defects for a period of two (2) years from the shipment date determined by the battery charger serial number and/or invoice from purchase date. Nivel warrants all accessories & complimentary products (cables, SOC (state of charger meter), solenoids, voltage reducers, etc.) to be free of manufacture defects for a period of one (1) year from the shipment date determined by the invoice from purchase date.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Charging Storage Ability in Normal Temperature Rest Capacity ≥ Standard Capacity *97% After standard charging, store at 77°F ± 41°F for 1 month, and then discharge capacity @0.2C current to the end of discharge voltage, then measure the capacity of cell.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Unconfirmed
“T ≥ 23°F The system continues heating while maintaining concurrent charging. Ensures efficient warming and charging within a safe thermal range. T ≥ 32°F The system deactivates heating and switches to charging-only mode. Battery has reached the optimal operating temperature; heating is disabled to conserve energy. T > 14°F Charging proceeds normally without activating the heating system. Battery is already within the standard safe charging temperature range.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“The battery heating system is active only during charging events. Charging is defined as: • External charging via a charger • Regenerative braking (Regen) energy recovery”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Internal Impedance ≤50mΩ At 50% SOC, 1kHz AC internal resistance test instrument.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Never run Batteries in series. If you do, your warranty will be VOID.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Models: 33-51105SB, 33-51105SH 105 Ah - 51 Volt”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“SOC (State-of-Charge Meter) 36-51V Bolt 30 AMP High Output Reducer 72V Bolt 50AMP High Output Reducer Waterproof Charger w/ Charger Interlock Pigtail Deco Plate for AC Hardwire AC Hardwire Onboard Charge Adapter (2) 40" 2AWG Cables 12 AWG 15 Foot Extension Cord 36-51V-400A Solenoid with Diode Lead Battery Removal Strap PROFESSIONAL KITS INCLUDE:”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“SOC (State-of-Charge Meter) Waterproof Charger w/ Charger Interlock Pigtail Deco Plate for AC Hardwire AC Hardwire Onboard Charge Adapter 12 AWG 15 Foot Extension Cord • (2) 5/16 Battery Post with Lock Washers • (3) - 3/8, (3) 5/16 Battery Ring Terminal • (10) 10" Tie Straps • Stickers Bracket & Hardware Bluetooth Receiver ® STANDARD KITS INCLUDE:”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
Disputed
“If your vehicle will remain idle for a week or more, charge the battery to 50-80%, disconnect the charger, and turn off the battery by holding the on/off button (located on the battery) or the black button on the SOC display for 3 seconds.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“During transportation the Battery should be at 50% SOC to prevent short circuits if there is an accident reducing the risk of fire. • Battery should be kept at 32°F - 113°F indoors where it's dry, clean, and well-ventilated.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
“Authorized Dealers Only: This Warranty is strictly limited to products originally purchased from an approved Nivel dealer or website. Products purchased through unauthorized third parties or “gray market” sellers are excluded from all warranty coverage.”
Source: boltenergyusa.com/wp-content/uploads/2026/09/105Ah-51V-33-51105SB-33-51105SH-Instructions_R2.pdf
United States — CPSC
We did not match this product to any recall in the data we hold from CPSC, last checked September 22, 2026. Check CPSC’s own search: cpsc.gov/Recalls
European Union
We did not match this product to any recall in the data we hold from the European Union, last checked September 22, 2026. Check the European Union’s own search: ec.europa.eu/safety-gate-alerts/screen/search
United Kingdom
We did not match this product to any recall in the data we hold from the United Kingdom, last checked September 22, 2026. Check the United Kingdom’s own search: gov.uk/product-safety-alerts-reports-recalls
Australia
We did not match this product to any recall in the data we hold from Australia, last checked September 14, 2026. Check Australia’s own search: productsafety.gov.au/recalls
Canada
We did not match this product to any recall in the data we hold from Canada, last checked September 22, 2026. Check Canada’s own search: recalls-rappels.canada.ca/en/search
France
We did not match this product to any recall in the data we hold from France, last checked September 22, 2026. Check France’s own search: rappel.conso.gouv.fr
New Zealand
We did not match this product to any recall in the data we hold from New Zealand, last checked September 22, 2026. Check New Zealand’s own search: productsafety.govt.nz/recalls
Singapore
We did not match this product to any recall in the data we hold from Singapore, last checked September 22, 2026. Check Singapore’s own search: consumerproductsafety.gov.sg/consumers/safety-alerts-and-recalls
South Africa
We did not match this product to any recall in the data we hold from South Africa, last checked September 22, 2026. Check South Africa’s own search: thencc.org.za/product-recalls
Ireland
We did not match this product to any recall in the data we hold from Ireland, last checked September 22, 2026. Check Ireland’s own search: ccpc.ie/consumer-advice/product-safety/product-safety-notifications
South Korea
We did not match this product to any recall in the data we hold from South Korea, last checked September 22, 2026. Check South Korea’s own search: safetykorea.kr/recall/recallBoard
Netherlands
We did not match this product to any recall in the data we hold from the Netherlands, last checked September 23, 2026. Check the Netherlands’ own search: nvwa.nl/actueel/veiligheidswaarschuwingen/overzicht
Norway
We did not match this product to any recall in the data we hold from Norway, which we hold records from but do not yet check on a schedule. Check Norway’s own search: farligeprodukter.no/search
None of these is a statement that the product is safe or unrecalled — only that our searches found nothing. Each regulator’s own search is linked above.
Carts — none listed
No sourced compatibility evidence is on file for this battery yet.