コンタクタ,サーキットブレーカー,センサー,エンコーダ,PLC,コンバータ
(YUASA NP Series Valve-Regulated Lead-Acid Battery, VRLA AGM)
モデルの定義:
NP: YUASA standard standby valve-regulated lead-acid series (float charge design, design service life 3~5 years at 25℃)
2.6: Rated capacity 2.6Ah at 20-hour rate
12: Rated voltage 12V DC
FR = Flame Retardant: Flame-retardant housing UL94-V0, terminal is F1 quick-disconnect tab (0.187 インチ / 4.75mm tab)
This model has been discontinued by the original manufacturer; compatible replacement batteries are widely available on the market.
主要な技術仕様
| アイテム | パラメータ |
| 定格電圧 | 12V |
| 定格容量 | 2.6Ah@20HR, cut-off voltage 10.5V, 25℃で |
| 端子の種類 | F1 0.187″ quick-disconnect tab (4.75mm) |
| ハウジング | Flame retardant UL94-V0 |
| Internal Resistance (fully charged @25℃) | 約. 68mΩ |
| マックス. Charging Current | 0.65あ |
| マックス. 5-second Discharge Current | 34.5あ |
| Float Charge Voltage (@25℃) | 13.65V ±0.15V; Temperature coefficient: -3mV/℃ per cell |
| Cycle Charge Voltage (@25℃) | 14.4~15.0V; Temperature coefficient: -4mV/℃ per cell |
| 動作温度 | 放電: -15℃～+45℃; Charge: -15℃～+40℃; ストレージ: -15℃～+50℃ |
| Self-discharge | 約. 2% per month at 25℃ |
| Reference Dimensions | 70mm × 48mm × 99mm (L × W × Overall Height) |
| 重さ | 約. 0.9kg |
製品の特徴
- AGM absorbed glass mat separator, valve-regulated sealed maintenance-free. No water replenishment required under normal operation; can be mounted sideways (DO NOT invert).
- Lead-calcium grid, low self-discharge, excellent recovery performance after deep discharge.
- FR flame-retardant housing, meets safety requirements for fire equipment, security systems and industrial control devices.
- Suitable for long-term float standby power supply as well as short-period cyclic operation.
代表的な用途
Small UPS uninterruptible power supply, fire emergency lighting
Security alarm host, access controller
計装, medical backup power supply
Parking lock, small emergency light, electric toys
選択 & 交換ガイドライン
- Three priority criteria for replacement: 12V, 2.6Ah capacity, F1 0.187 inch tab terminal; keep housing dimensions as consistent as possible.
- Ordinary HB housing batteries are not recommended to replace FR flame-retardant version. Fire and security equipment are subject to mandatory flame retardancy requirements.
- Float charge applications must strictly control float voltage. High ambient temperature will drastically shorten service life.
- Over-discharge is prohibited; discharge cut-off voltage shall not be lower than 10.5V. Severe under-discharge will cause irreversible capacity degradation.
トラブルシューティングガイド
Open-circuit voltage below 12.0V: Likely undercharged. Recharge with low constant current first; voltage below 10.5V usually means battery failure.
Voltage drops rapidly after charging: Internal plate sulfation or short circuit in single cell, replace directly.
Bulging or overheating housing: Overcharging, check if charger voltage drifts.
YUASA NP2.6-12FR (12V 2.6Ah, UL94-V0 Flame-retardant Housing) アプリケーション
コアの位置決め: Primarily for float standby power, light cycling as secondary use; FR flame-retardant housing, preferred for fire protection and security equipment requiring fire resistance
- Fire Emergency Category (Main Application of FR Version)
- Fire emergency lighting lamps, exit signs, evacuation indicator lights
- Fire alarm control panel, smoke/heat detector controller, backup power for fire linkage modules
- Emergency broadcast, backup battery for fire telephone extensions
- 安全 & Anti-theft Systems
- Burglar alarm host, infrared beam detector, perimeter alarm controller
- Access controller, backup power for electromagnetic locks, indoor video intercom
- Backup power for small PTZ / power box in surveillance (short-duration power failure backup)
- 小型UPS & 産業用制御機器
- Micro UPS, low-power industrial uninterruptible power supply (power failure protection for PLC and small controllers)
- Industrial instruments, 試験装置, online monitoring device backup power
- Small POS terminals, toll controllers, backup power for parking locks
- Backup Power for Medical Instruments
- Portable patient monitors, 血圧計, backup power for small medical instruments during power outage
注記: Only for short-time standby power, NOT suitable for high-power life-support equipment.
- Other Light-load Applications
- Small solar / wind micro energy storage (low-power off-grid system, float charge mode)
- 自動販売機, self-service terminal backup power
- Small electric devices, electric toys (light cycling, NOT for frequent deep discharge)
選定メモ (Key Points for FR Version)
NP2.6-12FR adopts UL94-V0 flame-retardant housing. FR model must be used for fire and security projects. Ordinary NP2.6-12 (non-flame-retardant housing) cannot substitute FR version for fire equipment acceptance. This battery is designed mainly for float standby service, not for continuous high-power or frequent deep discharge scenarios.
YUASA NP2.6-12FR Outline Dimensions (Original Spec, ユニット: mm)
長さ(L): 70 mm
幅(W): 48 mm
Case Height(H, excluding terminals): 94 mm
全高(TH, including F1 terminals): 99 mm
許容範囲: Length/Width ±1mm, Overall Height ±2mm
重さ: 約. 0.9 kg
ターミナル: F1 4.75mm (0.187 インチ) quick-disconnect tab
備考: NP2.6-12 and NP2.6-12FR have identical outer casing dimensions. FR only indicates flame-retardant UL94-V0 housing with no dimension difference.
Recommended reserved space for enclosure installation: 72×50×101mm
YUASA NP2.6-12FR Operating Temperature (YUASA NP Series Spec)
Discharge Temperature: -15℃～+45℃
Charge Temperature: -15℃～+40℃
保管温度: -15℃～+50℃
✅ Recommended optimal ambient temperature: 20～25℃. 25℃ is the reference temperature for rated capacity and service life.
⚠️ Important Reminders
- Long-term operation above 25℃ will significantly shorten battery life; service life halves roughly for every 8~10℃ rise.
- Available discharge capacity decreases at low temperature; runtime reduces under sub-zero conditions.
- Charging must not exceed upper limit +40℃, otherwise bulging and thermal runaway risk may occur.
- Temperature compensation is recommended for float charging: -3mV/℃ per cell.
YUASA NP2.6-12FR Weight
約. 0.9 kg (nominal weight from original manufacturer, including electrolyte)
Imperial conversion: ≈1.98 lbs
備考:
- NP2.6-12 and NP2.6-12FR share identical internal plates and electrolyte. FR only refers to flame-retardant modified housing with no weight difference.
- Mass production tolerance: typically ±0.05kg.
- Net weight of finished product, excluding packaging.
YUASA NP2.6-12FR Voltage Parameters
Nominal Output Voltage: DC 12V
Voltage at Different States (@25℃)
- Fully charged open-circuit voltage: 約. 12.8～13.0V
- Float operating voltage (standby mode): 13.65V ±0.15V
- Cycle charging voltage: 14.4～15.0V
- 20HR standard discharge cut-off voltage: 10.5V (Stop discharge once reaching this value; continued discharge will damage the battery)
補足事項:
Under loaded discharge, voltage gradually drops as SOC decreases. Larger load causes larger instantaneous voltage drop.
Temperature affects voltage: Temperature coefficient -3mV/℃ per cell, total -18mV/℃ for 6 cells.
Open-circuit voltage below 12.0V indicates undercharged battery; prolonged voltage below 10.5V easily causes irreversible plate sulfation and scrapping.
